Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b6954351a42af23…

MALICIOUS

PDF

99.5 KB Authoring application: LibreOffice Draw
MD5: e3afaf6936e7764afba68c16d6527d4a SHA-1: a393a50d3c3984738c7648c0a0209361ba50a750 SHA-256: 0b6954351a42af234d9641ad4780f982cc257441f6e976f57e5bafc842b273d0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded external links, as detected by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also flagged this file as malicious. The embedded URLs likely lead to further malicious content or phishing pages, suggesting a tactic to distribute or host harmful files. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://calacascalifornia.com/uploads/1/3/0/6/130621663/dewukixu.pdf
    • http://logoless.net/uploads/1/3/0/4/130435966/dodamat.pdf
    • http://shs2020.com/uploads/1/3/0/4/130483087/6505789.pdf
    • http://kouturekitty.com/uploads/1/3/0/7/130775527/somaxenivowibe-wimobujiw-rabotatusulum-bopewumevowudi.pdf
    • http://corridormanchester.com/uploads/1/3/0/6/130604588/wokijoniwagunar_radonuliwulo_tewatifoj_xixowaguxo.pdf
    • http://www.lakecreekminatureaussies.net/uploads/1/3/0/5/130588716/sobekov.pdf
    • http://sound-systems.net/uploads/1/3/0/6/130639534/159488946ecb9f4.pdf
    • http://edcollaborations.org/uploads/1/3/0/7/130776228/jakubaka.pdf
    • http://ravisatyakahn.com/uploads/1/3/0/5/130588291/wopukiwemabunebipolu.pdf
    • http://thriftstorebattle.com/uploads/1/3/0/4/130490681/1971390.pdf
    • http://journeysinsixth.com/uploads/1/3/0/4/130476652/b61cbb4.pdf
    • http://www.joannsdotter.com/uploads/1/3/0/5/130542870/kufemigug_gelotivimixe_bewurerasa_tudeguvomi.pdf
    • http://medicspamassage.com/uploads/1/3/0/5/130551341/semigenufuwod_sakopop.pdf
    • http://aliveatfive.org/uploads/1/3/0/3/130313356/mutaxisi_raruvalegaw_sijigezakotox.pdf
    • http://mmareport.net/uploads/1/3/0/5/130589348/bf6cb16c97baf3.pdf
    • http://positivegrind.org/uploads/1/3/0/7/130738945/xemimu-lubojewureso.pdf
    • http://stevedurkac.net/uploads/1/3/0/5/130539886/limugug_werus.pdf
    • http://csmnow.org/uploads/1/3/0/3/130323588/735e26627f.pdf
    • http://firstmeeting.com/uploads/1/3/0/7/130739046/130739046.html#vadodara+to+surat+train+time+table+on+tuesday
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000501a.bin
d0b016f560eacd3225708cb647362cdcd1a242c3082dbd0d984139e28704f229		 pdf-font-stream PDF embedded font (sfnt) at offset 0x501A 16504 bytes
font_01_sfnt_off00006627.bin
234ac95f36432537b3163929e34291e9b45fc50d74055e81640243e1454a880e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6627 2700 bytes
font_02_sfnt_off0000728e.bin
7be1acc967ec0a709968b2ada85e8443dcb3ac87d1b0544df577198666adb378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x728E 9140 bytes
font_03_sfnt_off0001275e.bin
f757ac70662f8b6a8826e8e7dadc7b5df04f171bc7ee76ba48ee488c610f4554		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1275E 1500 bytes
font_04_sfnt_off00012ec9.bin
1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EC9 1388 bytes
font_05_sfnt_off0001376d.bin
050a37cffe14c8f92b0e37b78e9121ccced65e08d2202ad140059c6a204a0349		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1376D 11356 bytes

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