Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c87a4da6ee1d678…

MALICIOUS

PDF

33.5 KB Authoring application: Adobe PDF Library 9.0
MD5: b9a5dc5a06fc655555484c061c57840a SHA-1: d7bd3108e23de377185526cf18012ac78d8c1687 SHA-256: 6c87a4da6ee1d6786941c3dcd6cf4bbe87fe20a8b2ff48011c0029232ee20708
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The primary attack pattern observed is the embedding of a large number of external links, identified as a 'PDF_SEO_LINK_FARM'. These links likely lead to further malicious content or phishing sites. No scripts were extracted from this sample, but the presence of embedded URLs suggests a redirection or download mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://thebiryanibox.net/uploads/1/3/0/5/130588846/576589.pdf
    • http://projectcece.org/uploads/1/3/0/8/130874034/jufoxif_gapolopos_rofalurozo_wisonadewumit.pdf
    • http://zanzibar-packages.co.za/uploads/1/3/0/6/130640125/271e315d3.pdf
    • http://lrasmussenillustration.com/uploads/1/3/0/5/130543107/8039712.pdf
    • http://eitgrouponline.com/uploads/1/3/0/6/130621243/ca11172.pdf
    • http://mail.uulerproductions.com/uploads/1/3/0/2/130272387/vepurogifozuja.pdf
    • http://ducklandinggrill.com/uploads/1/3/0/5/130589295/binedoxuw.pdf
    • http://holidaysoffbroadway.com/uploads/1/3/0/6/130620668/cb48b8c69117.pdf
    • http://cafecancunco.us/uploads/1/3/0/3/130324357/xewiwuxezub-wedaja-jagudavuduzera-lobixanuranow.pdf
    • http://admin.creativedesigndisplays.com/uploads/1/3/0/4/130483499/bitenixadi.pdf
    • http://beachsack.net/uploads/1/3/0/7/130738850/4d4dba3e413d.pdf
    • http://holypost.info/uploads/1/3/0/6/130604549/zoxavazegiluto.pdf
    • http://candacegraham.com/uploads/1/3/0/6/130640010/dedij-karijaluw-xabixaroxututun.pdf
    • http://jonahwolfraim.com/uploads/1/3/0/3/130323465/8508106.pdf
    • http://wastenotmakers.com/uploads/1/3/0/6/130604788/02b7f7c7.pdf
    • http://www.streetart-racing.com/uploads/1/3/0/4/130476413/8741639.pdf
    • http://x0075085xstreamtravel.xsideas.com/uploads/1/3/0/6/130604140/130604140.html#mamma+mia+sheet+music+easy+piano

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000250a.bin
bb87d7a2106fe11fe012b26710daffae8e3dcf426230558439eae112d44b009a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x250A 8736 bytes

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