Malicious PDF — malware analysis report

Static analysis result for SHA-256 69b4aa801fef9c5b…

MALICIOUS

PDF

46.7 KB Authoring application: Scribus
MD5: 95fe966e7c22551b50a4394412210a3c SHA-1: 735cb4cebede88bafb4bdf47c56e51683b1ab4b5 SHA-256: 69b4aa801fef9c5bbc12e6545f912d31df612b4300cde261e4d669ae11305a0c
152 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with numerous URLs pointing to other PDF files hosted on various domains. This behavior is indicative of SEO manipulation or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://stadiumcatering.com/uploads/1/3/0/7/130775893/begidepokinavi_bubitakamanazow_muranixon_refifemudamelip.pdf
    • http://b-millers.com/uploads/1/3/0/5/130589427/5260285.pdf
    • http://plantbasedposthuman.com/uploads/1/3/0/4/130435561/6290762.pdf
    • http://oilchemical.net/uploads/1/3/0/6/130621279/sovutojuf-nogerexeg-jolajufobimi.pdf
    • http://kubikweb.com/uploads/1/3/0/3/130323425/kewonodutemovis-rorotuwepi-reliret-lozanamevi.pdf
    • http://wicked-wayz.com/uploads/1/3/0/2/130288592/rutitupol.pdf
    • http://beamacademy.org/uploads/1/3/0/7/130739082/9512989.pdf
    • http://www.intaspectrainingschool.co.uk/uploads/1/3/0/7/130738680/nikofiwipaf-xomopivitofaki-kenulavo-bewoguze.pdf
    • http://new.ferrybeach.org/uploads/1/3/0/4/130436224/dumasopezatobug.pdf
    • http://dalmatiansofkentucky.com/uploads/1/3/0/3/130323984/galaxajazanida.pdf
    • http://host113.carmichaelnl.com/uploads/1/3/0/2/130270885/130270885.html#dialogue+en+anglais+traduit+en+francais+pdf
    • http://www.adobe.com/).Noto
    • http://www.google.com/get/noto/http://www.adobe.com/type/This
    • http://scripts.sil.org/OFLNoto
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030b6.bin
b64d6741cfec0aad0865d017b05e0e1fb7b4a6100249b802a3843c97d8d05181		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30B6 4552 bytes
font_01_sfnt_off00003f27.bin
f2882731535f365816d72480ce80aeec0abc60bda8867fff59515799e31da97e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F27 17228 bytes
font_02_sfnt_off00005b89.bin
5b4becc11a4ef58982dc1f459cf3e006be1e3b7d983d309cd128d92f64cdc814		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B89 10920 bytes

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