Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ebb61e9ba7ee3c9…

MALICIOUS

PDF

28.6 KB Created: 2020-04-25 10:39:38 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e13d00195175602ab1136f4a880e7734 SHA-1: ea71842639b8cb8996832f57f7930062dd0dc027 SHA-256: 4ebb61e9ba7ee3c9b24085dcc4e8a0b11051c6a64d84310d3c706b7a123ce8ab
92 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used in SEO spam or link farm attacks. The document body, though truncated, mentions 'Asbestos roofing sheets sizes in sri lanka', suggesting a lure to attract clicks. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://liverpoolcountrystore.com/uploads/1/3/0/6/130621636/130621636.html#asbestos+roofing+sheets+sizes+in+sri+lanka
    • http://thestudio-eckington.com/uploads/1/3/1/8/131872096/7340722.pdf
    • http://tutorialesapp.com/uploads/1/3/0/5/130545485/6330654.pdf
    • http://contact-ola.com/uploads/1/3/0/6/130621063/c5b97a.pdf
    • http://entrepreneursover50.com/uploads/1/3/0/8/130813420/7842560.pdf
    • http://marileeparrish.com/uploads/1/3/0/4/130488691/9103507.pdf
    • http://freespiritslongisland.com/uploads/1/3/0/6/130605442/ef83bc82412d071.pdf
    • http://swansonfitness.net/uploads/1/3/1/4/131452838/xowanu.pdf
    • http://goldenphotography.org/uploads/1/3/0/6/130620508/xomenosiwigiwez.pdf
    • http://opentaxhavens.org/uploads/1/3/0/6/130639687/6584158.pdf
    • http://code-farm.com/uploads/1/3/0/6/130604319/f9459dd53.pdf
    • http://stuijvesant.be/uploads/1/3/0/8/130813518/2366402.pdf
    • http://bevinbranlandingham.com/uploads/1/3/0/7/130775106/bcb0bdaac2e4.pdf
    • http://oldmountainhomeimprovements.com/uploads/1/3/1/3/131398589/9338527.pdf
    • http://freespiritslongi

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