Pdf.Dropper.Agent-7142680-0 — PDF malware analysis

Static analysis result for SHA-256 028d311e5c1592bc…

MALICIOUS

PDF

1.05 MB Created: 2012-04-14 14:26:58 +02:00 Authoring application: Microsoft® Word 2010
MD5: 3f06a2a28836f5e470f6ea565b8a3de6 SHA-1: 5d916f319e77fc5cb4366434c160e3d5be966400 SHA-256: 028d311e5c1592bc4665d4d9f1744aabf429ee79be2ceb1a18d55b6935e1e5fa
538 Risk Score

Malware Insights

Pdf.Dropper.Agent-7142680-0 · confidence 95%

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains JavaScript that utilizes the `exportDataObject` function, which is known to be used in conjunction with PDF exploits to launch external applications. Heuristics indicate this is related to CVE-2023-26369 and CVE-2010-1240, and the sample is detected as Pdf.Dropper.Agent-7142680-0 by ClamAV. The embedded JavaScript attempts to launch `cmd.exe` with parameters that suggest it will execute a dropped file named 'blague.pdf', likely a malicious executable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

Heuristics 14

  • Adobe Reader Launch action command execution critical CVE exact CVE_2010_1240
    PDF uses the Adobe Reader/Acrobat Launch action pattern associated with CVE-2010-1240: cmd.exe is invoked with attacker-controlled parameters, paired with an embedded/exported payload.
  • TrueType bitmap font + active content — CVE-2023-26369 related high CVE related PDF_CVE_2023_26369_RELATED
    PDF embeds a TrueType font with bitmap tables (EBDT/sbix/CBDT) alongside exploit delivery indicators — CVE-2023-26369 exploits the sfac_GetSbitBitmap function in Adobe's libCoolType for arbitrary code execution. This CVE was actively exploited in the wild, but this rule does not validate the malformed EBLC/EBDT primitive.
  • Launch action critical PDF_LAUNCH
    PDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
  • /Launch action target: cmd.exe critical PDF_LAUNCH_COMMAND
    PDF /Launch action specifies an executable target with parameters '/Q /C %HOMEDRIVE%&cd %HOMEPATH%&(if exist "Desktop\\blague.pdf" (cd "Desktop"' — references a known-dangerous executable (cmd, PowerShell, etc.).
  • Embedded attachment masquerades: declared document, content is windows-executable critical PDF_EMBEDDED_FILESPEC_CONTENT_MISMATCH
    An /EmbeddedFile attachment's declared filename extension or /Subtype MIME type contradicts the magic bytes of its decompressed content. The attachment is declared as a benign document or image but the bytes are an executable or executable-bearing archive. This is a deliberate deception used to hide droppers in PDF attachments and is a generic indicator of embed-and-drop weaponisation, independent of any specific CVE.
  • PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER
    PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
  • ClamAV: Pdf.Dropper.Agent-7142680-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7142680-0
  • /Launch action paired with attachment-dropping JS API high PDF_LAUNCH_PLUS_DROPPER_JS
    PDF combines a /Launch action with a JavaScript API call that writes or opens an attached/external resource — the canonical shape of the CVE-2010-1240 /Launch + exportDataObject family. Benign PDFs do not pair these surfaces; the combination indicates a drop-and-execute chain regardless of the specific JS API knobs or /Launch target.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.blague.info/blagues/humour/drole-8889.html
    • http://www.blague.info/blagues/humour/drole-4664.html
    • http://www.blague.info/blagues/humour/drole-4667.html
    • http://www.blague.info/blagues/humour/drole-5795.html
    • http://www.blague.info/blagues/humour/drole-5885.html
    • http://www.blague.info/blagues/humour/drole-11836.html
    • http://www.blague.info/blagues/humour/drole-4666.html
    • http://www.blague.info/blagues/humour/drole-681.html
    • http://www.blague.info/blagues/humour/drole-679.html
    • http://www.blague.info/blagues/humour/drole-11816.html
    • http://www.blague.info/blagues/humour/drole-8669.html
    • http://www.blague.info/blagues/humour/drole-10909.html
    • http://www.google.be/imgres?q=rire&hl=fr&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&tbm=isch&tbnid=Qjlt1xoa0KjkXM:&imgrefurl=http://blog.ecolederire.org/&docid=5xzNnPKfjfZU6M&imgurl=http://blog.ecolederire.org/images/rire.jpg&w=300&h=370&ei=BmOJT_DgM4ak0QWfvajXCQ&zoom=1&iact=hc&dur=187&sig=114033032844469530272&page=1&tbnh=130&tbnw=105&start=0&ndsp=28&ved=1t:429,r:1,s:0,i:131&tx=106&ty=149&vpx=369&vpy=154&hovh=249&hovw=202
    • http://www.google.be/imgres?q=rire&hl=fr&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&tbm=isch&tbnid=szgZg2mJoB5iLM:&imgrefurl=http://savez-vous.e-monsite.com/pages/poemes-et-blagues/blagues.html&docid=MUnTlWWSHFWaGM&imgurl=http://s1.e-monsite.com/2009/10/20/12/46862440rire-jpg.jpg&w=254&h=272&ei=BmOJT_DgM4ak0QWfvajXCQ&zoom=1&iact=rc&dur=47&sig=114033032844469530272&page=3&tbnh=140&tbnw=131&start=58&ndsp=34&ved=1t:429,r:49,s:58,i:292&tx=65&ty=71
    • http://www.google.be/imgres?q=rire&hl=fr&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&tbm=isch&tbnid=XS33YCfWG46XFM:&imgrefurl=http://fr.universalscraps.com/commentaires.php?f=rire&page=10&docid=G2FscG8gQq5bnM&imgurl=http://c.universalscraps.com/files/fr/rire/rire_088.gif&w=276&h=288&ei=BmOJT_DgM4ak0QWfvajXCQ&zoom=1&iact=hc&vpx=524&vpy=106&dur=47&hovh=229&hovw=220&tx=100&ty=110&sig=114033032844469530272&page=3&tbnh=131&tbnw=126&start=58&ndsp=33&ved=1t:429,r:2,s:58,i:264
    • http://www.google.be/imgres?q=rire&hl=fr&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&tbm=isch&tbnid=jiAC8Btw7E167M:&imgrefurl=http://antonietaechico.centerblog.net/rub-pour-rire-.html&docid=NNKsxe54JoFR7M&imgurl=http://antonietaechico.a.n.pic.centerblog.net/24774f32.gif&w=300&h=299&ei=BmOJT_DgM4ak0QWfvajXCQ&zoom=1&iact=hc&vpx=856&vpy=198&dur=3844&hovh=224&hovw=225&tx=137&ty=119&sig=114033032844469530272&page=2&tbnh=139&tbnw=139&start=28&ndsp=30&ved=1t:429,r:16,s:28,i:228
    • http://www.google.be/imgres?q=rire&hl=fr&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&tbm=isch&tbnid=vcycDboaG82BFM:&imgrefurl=http://antonietaechico.centerblog.net/rub-pour-rire-.html&docid=NNKsxe54JoFR7M&imgurl=http://chez-smiley.be/rubriques/blagues/kit/Juste_pour_rire_587x407.jpg&w=587&h=407&ei=BmOJT_DgM4ak0QWfvajXCQ&zoom=1&iact=hc&vpx=963&vpy=2&dur=500&hovh=187&hovw=270&tx=199&ty=107&sig=114033032844469530272&page=3&tbnh=121&tbnw=175&start=58&ndsp=33&ved=1t:429,r:5,s:58,i:270
    • http://www.google.be/imgres?q=rire&hl=fr&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&tbm=isch&tbnid=at6hfcR8TrVAaM:&imgrefurl=http://www.rireenboite.com/article-la-blague-du-jour-17-01-2011-65188877.html&docid=yaLMAF3gbeI0oM&imgurl=http://idata.over-blog.com/2/17/55/82/c/RIRE.gif&w=295&h=308&ei=BmOJT_DgM4ak0QWfvajXCQ&zoom=1&iact=rc&dur=62&sig=114033032844469530272&page=2&tbnh=140&tbnw=134&start=28&ndsp=30&ved=1t:429,r:32,s:28,i:198&tx=84&ty=91
    • http://www.google.be/imgres?q=rire&hl=fr&sa=X&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&tbs=itp:clipart&tbm=isch&tbnid=PdZvgaonEVDoIM:&imgrefurl=http://www.proxiliege.net/index.php?page=article&id=2993&idrub=1&docid=csbPWtGJekYXUM&imgurl=http://www.proxiliege.net/photos/rire.jpg&w=300&h=225&ei=u2aJT5u5M8el0QWswozQCQ&zoom=1&iact=rc&dur=266&sig=114033032844469530272&page=2&tbnh=133&tbnw=176&start=17&ndsp=35&ved=1t:429,r:5,s:17,i:184&tx=75&ty=91
    • http://www.google.be/imgres?q=rire&hl=fr&sa=X&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&tbs=itp:clipart&tbm=isch&tbnid=o4LVj_Arfsr57M:&imgrefurl=http://www.boowakwala.com/coloriages/coloriage-rire.html&docid=JejVvHQZojEnfM&imgurl=http://www.boowakwala.com/coloriages/coloriage-rire.gif&w=1502&h=1169&ei=u2aJT5u5M8el0QWswozQCQ&zoom=1&iact=hc&vpx=884&vpy=292&dur=1984&hovh=198&hovw=255&tx=184&ty=124&sig=114033032844469530272&page=3&tbnh=145&tbnw=186&start=52&ndsp=31&ved=1t:429,r:4,s:52,i:258
    • http://www.google.be/imgres?q=rire&start=209&hl=fr&sa=X&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&addh=36&tbs=itp:clipart&tbm=isch&tbnid=rNL-doLOIkLzKM:&imgrefurl=http://40ans-et-plus.hautetfort.com/&docid=4jP3ie_mKo3R0M&imgurl=http://40ans-et-plus.hautetfort.com/images/Gif/JournalRire.gif&w=208&h=204&ei=YGiJT7v0NuOL0AXdn5TYCQ&zoom=1&iact=rc&dur=141&sig=114033032844469530272&page=8&tbnh=143&tbnw=143&ndsp=32&ved=1t:429,r:6,s:209,i:88&tx=67&ty=64
    • http://www.google.be/imgres?q=rire&start=209&hl=fr&sa=X&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&addh=36&tbs=itp:clipart&tbm=isch&tbnid=dLbWkC3wQW7PuM:&imgrefurl=http://pastille.centerblog.net/rub-gifs-rire-7.html&docid=urP2ZOKLo8wMkM&imgurl=http://pastille.p.a.pic.centerblog.net/hnocpsku.gif&w=178&h=157&ei=YGiJT7v0NuOL0AXdn5TYCQ&zoom=1&iact=rc&dur=141&sig=114033032844469530272&page=8&tbnh=125&tbnw=142&ndsp=32&ved=1t:429,r:20,s:209,i:118&tx=51&ty=56
    • http://www.google.be/imgres?q=rire&start=241&hl=fr&sa=X&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&addh=36&tbs=itp:clipart&tbm=isch&tbnid=qACnMrXNlw0s8M:&imgrefurl=http://guillaumedegalarza.doomby.com/pages/mes-pages/rire-chanson.html&docid=pxybZHtnMVh3RM&imgurl=http://guillaumedegalarza.doomby.com/medias/images/asterix.jpg&w=345&h=270&ei=YGiJT7v0NuOL0AXdn5TYCQ&zoom=1&iact=rc&dur=16&sig=114033032844469530272&page=9&tbnh=135&tbnw=173&ndsp=32&ved=1t:429,r:2,s:241,i:149&tx=70&ty=100
    • http://www.google.be/imgres?q=rire&start=83&hl=fr&sa=X&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&addh=36&tbs=itp:clipart&tbm=isch&tbnid=g7Iagu4tTUc7WM:&imgrefurl=http://fr.123rf.com/photo_8266374_rire-motic-ne.html&docid=Uudp4ucWSz6WLM&imgurl=http://us.123rf.com/400wm/400/400/yayayoy/yayayoy1011/yayayoy101100030/8266374-rire-motic-ne.jpg&w=1200&h=822&ei=9meJT8G8D-e_0QXUrK3GCQ&zoom=1&iact=rc&dur=0&sig=114033032844469530272&page=4&tbnh=123&tbnw=180&ndsp=31&ved=1t:429,r:5,s:83,i:15&tx=117&ty=76
    • http://www.google.be/imgres?q=rire&start=146&hl=fr&sa=X&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&addh=36&tbs=itp:clipart&tbm=isch&tbnid=UPl8ktlwN-PD-M:&imgrefurl=http://kompozitor.fr/ChtiBonheur/index.php%3Fpost/2009/10/04/Un-peu-plus-humain&docid=89V47GpWUpOy_M&imgurl=http://kompozitor.fr/dotclear/public/Images/Calvin_Hobbes/Fou_rire.png&w=422&h=252&ei=9meJT8G8D-e_0QXUrK3GCQ&zoom=1&iact=rc&dur=344&sig=114033032844469530272&page=6&tbnh=128&tbnw=215&ndsp=31&ved=1t:429,r:5,s:146,i:153&tx=96&ty=60
    • http://www.google.be/imgres?q=rire&hl=fr&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&tbm=isch&tbnid=f5VPjlFbt43XzM:&imgrefurl=http://www.fernelmont.be/SiteFernelmont/Agenda.nsf/.AllW/S%C3%A9ance+de+yoga+du+rire?Opendocument&docid=JUjjs0KXEUmUJM&imgurl=http://www.fernelmont.be/SiteFernelmont/Agenda.nsf/0/1ECAA426F078DA3CC12579A6004EC9E6/$File/Eclat%20de%20rire.jpg?OpenElement&w=1250&h=1000&ei=BmOJT_DgM4ak0QWfvajXCQ&zoom=1&iact=hc&vpx=982&vpy=316&dur=1000&hovh=201&hovw=251&tx=120&ty=101&sig=114033032844469530272&page=1&tbnh=123&tbnw=127&start=0&ndsp=28&ved=1t:429,r:13,s:0,i:156
    • http://www.google.be/imgres?q=rire&hl=fr&sa=X&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&tbs=itp:clipart&tbm=isch&tbnid=-8GK4eWE5zNylM:&imgrefurl=http://fr.123rf.com/photo_7634096_rire-des-enfants-heureux.html&docid=2LQQKJiWtJjlkM&imgurl=http://us.123rf.com/400wm/400/400/rvika/rvika1008/rvika100800029/7634096-rire-des-enfants-heureux.jpg&w=1200&h=756&ei=u2aJT5u5M8el0QWswozQCQ&zoom=1&iact=rc&dur=437&sig=114033032844469530272&page=2&tbnh=109&tbnw=173&start=17&ndsp=35&ved=1t:429,r:24,s:17,i:225&tx=89&ty=52
    • http://www.google.be/imgres?q=rire&start=241&hl=fr&sa=X&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&addh=36&tbs=itp:clipart&tbm=isch&tbnid=EexPe0ThiUWSMM:&imgrefurl=http://simplythebest84.centerblog.net/rub-POUR-RIRE-.html&docid=YV-YqgjEMY_BvM&imgurl=http://simplythebest84.s.i.pic.centerblog.net/eiapj8go.gif&w=381&h=303&ei=YGiJT7v0NuOL0AXdn5TYCQ&zoom=1&iact=hc&vpx=188&vpy=375&dur=718&hovh=200&hovw=252&tx=136&ty=128&sig=114033032844469530272&page=9&tbnh=139&tbnw=175&ndsp=32&ved=1t:429,r:13,s:241,i:173
    • http://www.google.be/imgres?q=rire&start=303&hl=fr&sa=X&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&addh=36&tbs=itp:clipart&tbm=isch&tbnid=OAWECPNo5ZOr9M:&imgrefurl=http://paroisseinternationaleandohalo.org/2010/01/07/la-blague-du-mois/&docid=q6da-BF3OK7ZhM&imgurl=http://paroisseinternationaleandohalo.org/wp-content/uploads/2010/01/smiley.jpg&w=240&h=251&ei=GWmJT6XYFKGw0QW3tvXOCQ&zoom=1&iact=rc&dur=250&sig=114033032844469530272&page=11&tbnh=142&tbnw=136&ndsp=32&ved=1t:429,r:7,s:303,i:86&tx=88&ty=77
    • http://www.google.be/imgres?q=rire&start=83&hl=fr&sa=X&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&addh=36&tbs=itp:clipart&tbm=isch&tbnid=8SKQG6x3TReBWM:&imgrefurl=http://jmcconseils.pagesperso-orange.fr/individu_yogarire_fr.htm&docid=mgsBcgjaemfoxM&imgurl=http://jmcconseils.pagesperso-orange.fr/media/rire.gif&w=222&h=200&ei=9meJT8G8D-e_0QXUrK3GCQ&zoom=1&iact=hc&vpx=946&vpy=517&dur=422&hovh=160&hovw=177&tx=158&ty=90&sig=114033032844469530272&page=4&tbnh=143&tbnw=159&ndsp=31&ved=1t:429,r:17,s:83,i:41
    • http://www.google.be/imgres?q=rire&start=146&hl=fr&sa=X&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&addh=36&tbs=itp:clipart&tbm=isch&tbnid=tCfJR6ItuR5nUM:&imgrefurl=http://drole-de-maths.skyrock.com/2369607959-Pourquoi-le-gaz-hilarant-fait-il-rire.html&docid=-2O0GodFToCHvM&imgurl=http://b5.img.v4.skyrock.net/b5c/drole-de-maths/pics/2369607959_small_1.jpg&w=400&h=320&ei=9meJT8G8D-e_0QXUrK3GCQ&zoom=1&iact=hc&vpx=359&vpy=2&dur=437&hovh=201&hovw=251&tx=121&ty=75&sig=114033032844469530272&page=6&tbnh=140&tbnw=222&ndsp=31&ved=1t:429,r:20,s:146,i:186
    • http://www.google.be/imgres?q=rire&hl=fr&rlz=1T4GGLL_frBE338BE339&biw=1280&bih=796&tbm=isch&tbnid=f5VPjlFbt43XzM:&imgrefurl=http://www.fernelmont.be/SiteFernelmont/Agenda.nsf/.AllW/S%C3%A9ance+de+yoga+du+rire?Opendocument&docid=JUjjs0KXEUmUJM&imgurl=http://www.fernelmont.be/SiteFernelmont/Agenda.nsf/0/1ECAA426F078DA3CC12579A6004EC9E6/$File/Eclat%20de%20rire.jpg?OpenElement&w=1250&h=1000&ei=BmOJT_DgM4ak0QWfvajXCQ&zoom=1&iact=hc&vpx=982&vpy=316&dur=1000&hovh=201&hovw=251&tx=120&ty=101&sig=11403303
    • http://www.microsoft.com/typography/ctfontshttp://fontfabrik.comYou
    • http://www.microsoft.com/typography/fonts/default.aspx
    • http://crl.microsoft.com/pki/crl/products/CSPCA.crl0H
    • http://www.microsoft.com/pki/certs/CSPCA.crt0
    • http://crl.microsoft.com/pki/crl/products/tspca.crl0H
    • http://www.microsoft.com/pki/certs/tspca.crt0
    • http://www.microsoft.com/typography

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
blague.pdf
b7084be86d26af5a82e46043fd4435dfd48ba4474ff8322eb4439bcceed053c0
pdf-embedded-file PDF EmbeddedFile object 1291 at offset 0x108DFF 26112 bytes
javascript_obj1292_000.js
4bd74b2a9f98cdc422cf5868be91e16e98e9ed9cf30a71e477744e174502d3af
pdf-javascript-stream PDF /JS object 1292 at offset 0x10BB50 55 bytes
stream_067_off000de578.bin
b2fbfa78ac376d26ff681e775a70c7cbcf17b1875cbaa14f488954ef8eb96c6a
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xDE578 177192 bytes