Malicious PDF — malware analysis report

Static analysis result for SHA-256 47b3b3f945c10d90…

MALICIOUS

PDF

29.5 KB Authoring application: SWFTools
MD5: 2b3c4b31710c8b4147d93b18f1912202 SHA-1: c1858d90cacae6cdf4eb385892f8c0434848de93 SHA-256: 47b3b3f945c10d90e4e2845577864e1acaa3d6c4eaed3d1741fe190fb25f2bbd
152 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF was flagged by multiple heuristics, including a critical finding for a link farm and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body contains numerous embedded URLs, all of which are untrusted and likely lead to malicious content. The primary attack pattern observed is the distribution of a large number of external links, suggesting a phishing or malware distribution campaign.

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://saw.finni.ru/uploads/2020/01/29/roxewarawupod.pdf
    • http://workingonmythickness.com/uploads/1/3/0/6/130603907/2c9475.pdf
    • http://ctande.com/uploads/1/3/0/6/130604542/tufus_kunined_pojarafesok_dovizemafezoxiz.pdf
    • http://kupitonline.info/uploads/2020/01/29/11de9f9.pdf
    • http://sebewu.colorfulinkstudio.com/uploads/2020/01/28/xamopod.pdf
    • http://bsca2016.bsca.info/uploads/1/3/0/3/130313203/janimikivuta-wavumobu-fesebefexeb.pdf
    • http://thecameracat.com/uploads/1/3/0/5/130551206/3cd0bb4ceb337c0.pdf
    • http://bartolomeilaw.com/uploads/1/3/0/6/130604855/130604855.html#afghan+jalebi+song++mp4

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001118.bin
4287a74fbd3c1a5fed14e2232aeb2aabcf28e8974a85619169417b686ec9a5cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1118 7864 bytes

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