Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc3047c45ae750d…

MALICIOUS

PDF

41.4 KB Authoring application: Soda PDF
MD5: 376c0e43b76ef3baaf3f2ac39c78df8f SHA-1: 9e3c778fc34243c1d300ff2ca14b3252275ae9ef SHA-256: 9fc3047c45ae750d99ae1eaa2c793a382630d642b6f5cf09377f4150462bd80e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, for being malicious. The PDF_SEO_LINK_FARM heuristic indicates a large number of external PDF links, with the first being http://youthening.org/uploads/1/3/0/5/130542692/lozotefoxoluxodo.pdf. This suggests a phishing or content-luring campaign designed to drive traffic to a network of malicious sites.

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://youthening.org/uploads/1/3/0/5/130542692/lozotefoxoluxodo.pdf
    • http://gaxafe.redping.ru/uploads/2020/01/27/10fae5d9bb5cd.pdf
    • http://howardcountyschoolhealthcouncil.com/uploads/1/3/0/6/130620828/nobubod.pdf
    • https://dugixefola.weebly.com/uploads/1/3/0/4/130490421/gifekunun_fipora_ruwatose.pdf
    • http://spicedforyou.com/uploads/1/3/0/5/130588705/c486aea2.pdf
    • https://vedegidapuwo.weebly.com/uploads/1/3/0/3/130323180/buzubutoku.pdf
    • http://mcquown.us/uploads/1/3/0/5/130540525/wewurivoronozenoka.pdf
    • http://modibekawu.how2save.ru/uploads/2020/01/28/pewebuposujowubiki.pdf
    • http://nitrotvtrial.com/uploads/1/3/0/6/130639258/130639258.html#rental+lease+template+ma

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011fb.bin
af43f728059011c4a87926354a45a7a72b62fc5a7c18f514d4af323019b2fcd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB 9016 bytes

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