MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document that contains embedded JavaScript and numerous links. The links point to various PDF files hosted on potentially compromised websites, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne 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.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070aaea73ceb---81417655085.pdf
- http://phamtrangia.com/upload/files/tusuwaso.pdf
- http://richmore.kr/uploadfile/fckeditor/file/95664284708.pdf
- http://abwplazaview.com/uploads/files/tepapiluxupijopejowopiw.pdf
- https://kit-veron.my/ckfinder/userfiles/files/tiwusobawukef.pdf
- https://kidneystonetreatment.in/userfiles/files/7683557275.pdf
- http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16073e5077cafc---togokiv.pdf
- http://fornacedelia.it/userfiles/files/kadolujojibusazegupedupax.pdf
- http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/iacb8aor49jat9slhuh635atp7/gijulexawopebawe.pdf
- http://www.zywawiara.pl/pliki/jemuzude.pdf
- http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a5fb3f414e---31337863902.pdf
- http://ototavandosemesi.com/resimler/file/milexo.pdf
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/e8rmhi1q0cvl2nko8902a8cu3a/99918713302.pdf
- https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16085bda8ac7ae---dagitifesa.pdf
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161121cbc6a1e7---88459344513.pdf
- http://hiace-yoshikawa.com/js/upload/files/93679383784.pdf
- https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba584817d74---jusetogilog.pdf
- http://dush-kz.ru/uploads/fck/file/nedukejoge.pdf
- https://zlatartopalovic.rs//files/pimumo.pdf
- http://canvangdientu.com/images/file/28801915932.pdf
- http://porpora.biz/imagenes/imagenes_contenidos///zudogezomemuwaji.pdf
- http://st-ark.it/userfiles/files/88262099844.pdf
- http://allamericannursing.com/userfiles/file/wovavotakivuxitudovugi.pdf
- https://stbenedikt.ch/userfiles/files/38210837282.pdf
- https://limblength-sldf.com/userfiles/file/35242881728.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=windows+10+speech+recognition+custom+commands
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f3d7.bin3408c6a5e5662d97cdbbe44a1a34b8f86b1ab6540a82d7dbddcd129e1898922d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3D7 | 17160 bytes |
font_01_sfnt_off000120ad.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x120AD | 16792 bytes |
font_02_sfnt_off000138c4.binb2e0d1c3510de1981488f53d4edd3acd6b6a683fd52d635b94d6a00877fedd44 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x138C4 | 11268 bytes |
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