Malicious PDF — malware analysis report

Static analysis result for SHA-256 6239b4f03b405491…

MALICIOUS

PDF

26.5 KB Created: 2020-04-23 18:07:30 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3c4bbd660f50e35a7116eeaa59bf8b6e SHA-1: 7a906d3ac89792bbab52e5cc967a377055cc7304 SHA-256: 6239b4f03b405491d9558e4f5d0e1a2e7c7b5b1d4f07edeeab13fa012d967c56
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a link farm, indicating a large number of external links. The document body, though heavily obfuscated, contains a URL that is also listed in the heuristics. This suggests the primary purpose is to redirect users to a network of potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://410nmilwaukee.com/uploads/1/3/1/6/131606046/131606046.html#dha+bahawalpur+online+application+form
    • http://railcitypraiseproject.com/uploads/1/3/1/6/131606259/2316321.pdf
    • http://henrymohrpta.org/uploads/1/3/0/5/130542710/giwere.pdf
    • http://shilohreunion.com/uploads/1/3/1/3/131383767/berax-pesateti.pdf
    • http://evan-d-williams.com/uploads/1/3/0/5/130542907/6409535.pdf
    • http://hasblady.com/uploads/1/3/0/7/130776149/kibobugi_sonexod.pdf
    • http://801arrowood.com/uploads/1/3/0/8/130874238/1719126.pdf
    • http://hdantenna-dayton.com/uploads/1/3/0/7/130776682/8431380.pdf
    • http://snapshotsfromhell.com/uploads/1/3/1/4/131454172/gawadedi-nuwerur.pdf
    • http://chifambamusic.com/uploads/1/3/0/7/130775046/8404863.pdf
    • http://thelilacedition.com/uploads/1/3/1/0/131070651/buwebomowa.pdf
    • http://april-white.com/uploads/1/3/1/4/131406343/xizimuguxamini_bugosu_tegatevivulov_lakuwusem.pdf
    • http://pastrycorner.org/uploads/1/3/0/4/130435658/3016453.pdf
    • http://inyourfacefeedback.com/uploads/1/3/0/2/130288864/413375.pdf

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