Malicious PDF — malware analysis report

Static analysis result for SHA-256 6227748e3106fa35…

MALICIOUS

PDF

57.6 KB Authoring application: Solid Converter PDF
MD5: c86c694c11f45eaca90d416f390db6fc SHA-1: 52085f0925ce729336dd4d445eb0e9c1e6e8a94c SHA-256: 6227748e3106fa35891b8172058d040b032794549bf7bee0e1e328f8f3b8ce65
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. This suggests the document's primary purpose is to redirect users to a network of other PDF files hosted on various domains. The ClamAV detection and ML classifier further support its malicious nature, likely related to phishing or content distribution. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://cwlab.weebly.com/uploads/1/3/0/4/130489132/xunosimozumu.pdf
    • http://midlandma.org/uploads/1/3/0/6/130605122/pixaka-vowunaraxibigo.pdf
    • http://nomadfoodtruck.com/uploads/1/3/0/6/130621946/ee9e63fb0766417.pdf
    • http://oaxhealth.com/uploads/1/3/0/4/130435600/nalajejokewumuje.pdf
    • http://bairdsandthebeesca.com/uploads/1/3/0/5/130541028/5735299.pdf
    • http://rotten.red/uploads/1/3/0/6/130639258/riwilimub_dales_nimap.pdf
    • http://cakzglamdepo.com/uploads/1/3/0/2/130287939/xovulivarewareg.pdf
    • http://anzics2019.nz/uploads/1/3/0/2/130272347/230638811b.pdf
    • http://smcolife.com/uploads/1/3/0/6/130621277/5a3abc5a4.pdf
    • http://nickyarthur.com.au/uploads/1/3/0/6/130621926/selix_gukesogoged.pdf
    • http://budapestartsociety.com/uploads/1/3/0/6/130603971/pavukijovofujur-zevugusej-fazeketase-gefenapo.pdf
    • http://4lawsfamily.com/uploads/1/3/0/6/130604314/8024676.pdf
    • http://misssupremepurityqueen.com/uploads/1/3/0/7/130775958/130775958.html#chinle+formation+petrified+wood
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001444.bin
619a10d9500f84186054f6c7e57020ba54298dbd120f1abbca61bdb8001f92d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1444 9052 bytes
font_01_sfnt_off0000a6eb.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6EB 2652 bytes

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