Malicious PDF — malware analysis report

Static analysis result for SHA-256 130931ce71022d69…

MALICIOUS

PDF

35.4 KB Authoring application: ImageMagick
MD5: 5ddfe4338294b59c1a9e7bd81cf6483b SHA-1: c3bc3824978521b73f855170d57c79136922c339 SHA-256: 130931ce71022d69fc4df41bfc2ed8cd45e08c37fd2690721b2eca7aa37377fc
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on different domains. This suggests a tactic to manipulate search engine results or distribute a payload. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as phishing or malware distribution.

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://mrramsay.co.uk/uploads/1/3/0/5/130550970/69128.pdf
    • http://mohnayminks.com/uploads/1/3/0/5/130551087/961887.pdf
    • http://mobileautorepairsolutions.com/uploads/1/3/0/4/130477287/7ae48714c88.pdf
    • http://michaelwarrenmurphy.com/uploads/1/3/0/5/130588266/sebemujuli.pdf
    • http://compassconsultoria.net/uploads/1/3/0/2/130288402/sopuzibulev-tumijofomu-xazemuwe.pdf
    • http://shelbymaeedwards.com/uploads/1/3/0/8/130873916/xifiwolani.pdf
    • http://boisebrunchbabes.com/uploads/1/3/0/3/130313619/xufatujif.pdf
    • http://mysmartptt.com/uploads/1/3/0/3/130323733/luzerojupemil-sunemulatosugi.pdf
    • http://www.lafsports.com/uploads/1/3/0/3/130313613/jimijanu.pdf
    • http://ps172org.com/uploads/1/3/0/6/130621746/aec0cc2e44.pdf
    • http://romneyevent.com/uploads/1/3/0/6/130621046/f302d9f6dbc.pdf
    • http://wearsoever.com/uploads/1/3/0/5/130590481/1055505.pdf
    • http://moopad.net/uploads/1/3/0/6/130620996/9012959.pdf
    • http://agroecologyinternational.org/uploads/1/3/0/3/130323290/7835145.pdf
    • http://taiyangchengguanwang83sunciy.br3h.com/uploads/1/3/0/6/130640175/283150.pdf
    • http://aroundtheclocktots.gammaxiques.org/uploads/1/3/0/6/130639456/130639456.html#sickle+cell+anaemia+during+pregnancy

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031d3.bin
44359534cc1c7ddaa39ac917349c538f0802b63b1187a3b739876a4449f0d16b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31D3 7200 bytes

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