Malicious PDF — malware analysis report

Static analysis result for SHA-256 266a4b1631832b72…

MALICIOUS

PDF

34.7 KB Authoring application: Mobipocket Creator
MD5: 51ecb4d21ec6cb434b73a0a8840ff8db SHA-1: 66f3ba45e6eea28b2b56c31c8ff0830af2eb6f88 SHA-256: 266a4b1631832b7291b3b58bb3f89817badbf6a39c02c070252492940a1c8aa1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links predominantly point to other PDF files hosted on various domains, suggesting a link farm or a phishing distribution network. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious traffic generation intent. No scripts were extracted from this sample.

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://carolinegadsby.com/uploads/1/3/0/7/130738513/2a69cfc7663c2c.pdf
    • http://www.imetthomas.com/uploads/1/3/0/5/130589362/5593172.pdf
    • http://sarahelizabethcakes.com/uploads/1/3/0/7/130775883/kofobegaki_lemutinapiw_dexadavax_zonitud.pdf
    • http://human-ad.com/uploads/1/3/0/4/130436415/3287286.pdf
    • http://westsideyogatherapy.com/uploads/1/3/0/4/130477018/migixa-kemakavinidewi-rusajefezido.pdf
    • http://datinglass.com/uploads/1/3/0/2/130288380/79192672b.pdf
    • http://miko-trans.pl/uploads/1/3/0/6/130603673/263029c63f.pdf
    • http://pikminlink.com/uploads/1/3/0/8/130874009/bivebekagositotabozu.pdf
    • http://desatascosmataro.org/uploads/1/3/0/6/130639397/7249e4a4773.pdf
    • http://eventsforwriters.com/uploads/1/3/0/4/130489090/80f918b39.pdf
    • http://believethepromise.com/uploads/1/3/0/5/130588772/03ffe3b76.pdf
    • http://webmail.abcrgr.org/uploads/1/3/0/6/130621106/2504744.pdf
    • http://avivaclayman.com/uploads/1/3/0/4/130483856/vefuziz.pdf
    • http://jerusalemgin.com/uploads/1/3/0/5/130539479/ebb5bb2ddd840.pdf
    • http://mymissblue.com/uploads/1/3/0/3/130323415/130323415.html#achilles+tendonitis+treatment+nhs
    • http://pikminlink.com/uploads/1/3/0/8/130874009/bivebe

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030a8.bin
8ed795608cefbfffcaba4163ffdf3699e4c84aa5ec9b5e735231141ad1c8f7fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30A8 6936 bytes

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