Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fa7a33a5fc1fb9a…

MALICIOUS

PDF

38.0 KB Authoring application: pdf-parser
MD5: 88aecea9cec8dcce6115a0d0408aa1b6 SHA-1: 11edcfbd23963d235819b1ba716a7a37808fb3fd SHA-256: 8fa7a33a5fc1fb9a67991419f4047bc20ede878006884185d5908a1c49f5a980
120 Risk Score

Malware Insights

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

The PDF file exhibits a critical heuristic firing for a link farm, containing numerous external URLs. The ClamAV detection further confirms its malicious nature. The embedded URLs are likely used to redirect users to phishing sites or download further malicious content. 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://myorthomd.net/uploads/1/3/0/6/130639181/ad659e9d474f3.pdf
    • http://myweak.com/uploads/1/3/0/3/130379051/ba2d65.pdf
    • http://www.patrickmbruchert.com/uploads/1/3/0/7/130738753/puwazowolamov.pdf
    • http://laguna2001.com/uploads/1/3/0/5/130588366/lojofaboxipenul.pdf
    • http://animalsforprofit.com/uploads/1/3/0/3/130379060/zidoro_toxazoguwuko_zekuwum.pdf
    • http://musictheatercareers.com/uploads/1/3/0/6/130639291/4103471.pdf
    • http://www.jamaicapolicefed.org.jm/uploads/1/3/0/3/130323155/5294856.pdf
    • http://xppost.com/uploads/1/3/0/7/130740256/mudaja-fuvemumepus-nivef.pdf
    • http://www.sarcasticmoth.com/uploads/1/3/0/8/130874510/wadeleri.pdf
    • http://molliebing.com/uploads/1/3/0/4/130477663/a6994dc10965d.pdf
    • http://straycats.earth/uploads/1/3/0/8/130814229/6103296.pdf
    • http://cavaliernoir.com/uploads/1/3/0/8/130813651/53176d0cb69.pdf
    • http://mycleanohio.com/uploads/1/3/0/5/130590710/zitaji-muwirikifur-sateluvef-padub.pdf
    • http://9lggiv.bdgct.com/uploads/1/3/0/3/130313046/130313046.html#hikvision+8ch+hd+tvi+5mp+dvr+ds-7208hui-k2

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000386f.bin
bb87b314a0e9ed7e18623fbd3cd46469905f8ec27b9a7629ead8deb99d439e5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x386F 9096 bytes

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