Malicious PDF — malware analysis report

Static analysis result for SHA-256 c61471f16a0418ca…

MALICIOUS

PDF

33.9 KB Authoring application: Soda PDF
MD5: 3d7a69c38192358169876c20f1042883 SHA-1: ffd2b86fc9a1ae1c3d3c5f0eff4bdc358f2cbf3d SHA-256: c61471f16a0418cabd81c74755fd5470b25ebd47dd38730838bd89dadce594da
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm of external PDF files, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though heavily obfuscated, mentions 'Soda PDF Driver wifi broadcom 802. 11n', suggesting a lure to download drivers. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malware distribution intent. The primary IOC is the first URL in the link farm, which is likely the intended download destination.

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://mirkamalmi.com/uploads/1/3/0/5/130589454/sobugarufimakud-lekifuxinem-vevapava.pdf
    • https://dimupagutop.weebly.com/uploads/1/3/0/4/130436202/foxikorugo.pdf
    • http://fosijo.opros-russia.online/uploads/2020/01/27/8802024.pdf
    • http://schuberthackett.com/uploads/1/3/0/2/130272582/9529684.pdf
    • http://frostsurveyors.com/uploads/1/3/0/4/130435746/jidekitirimawo-jazogobar-wufozixasise.pdf
    • http://mkdkarate.com/uploads/1/3/0/5/130548108/sinararefo_gudosaxosu_logelitimogo_tonewisagapif.pdf
    • http://tenderzona.ru/uploads/2020/01/27/1716295.pdf
    • http://vertontravelservices.com/uploads/1/3/0/3/130323143/5828234.pdf
    • http://moodlabnewlife.nl/uploads/1/3/0/4/130476896/130476896.html#driver+wifi+broadcom+802.+11n

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011cb.bin
c6112539d3c496e390a1e8aa1688cafe584ba6458c59def5bcd7d3f21d44e5e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CB 7832 bytes

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