Malicious PDF — malware analysis report

Static analysis result for SHA-256 e532d97e519bd143…

MALICIOUS

PDF

22.3 KB Created: 2020-04-07 03:04:16 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2cb835b168ac382e280fb9d80c7a7858 SHA-1: 0e0255761c9b7149cbc2a01213104fa3f031c882 SHA-256: e532d97e519bd1439bbaeacd4eb609597809cd274868f96a12e7a4440d57d2e9
112 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF is identified as an image-only lure, typical for phishing campaigns. It contains numerous external links, with the primary one being http://rainbowcookiemike.com/uploads/1/3/0/2/130288514/130288514.html#hilio+del+ri%C3%B1on. The presence of a link farm suggests an attempt to broaden the reach of the malicious content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 22 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://rainbowcookiemike.com/uploads/1/3/0/2/130288514/130288514.html#hilio+del+ri%C3%B1on
    • http://funcreamor.org/uploads/1/3/0/9/130969553/20727.pdf
    • http://marcialayouni.com/uploads/1/3/0/5/130588922/goliwutowonar.pdf
    • http://thepinkwidow.com/uploads/1/3/0/6/130604117/034a69.pdf
    • http://buhundpuppies.com/uploads/1/3/1/3/131380205/8970599.pdf
    • http://white-travel06-amazing29ft.com/uploads/1/3/1/3/131383770/xigekolabata.pdf
    • http://aboyandhisdogbrewery.com/uploads/1/3/0/6/130620363/9db94e5bd59f39.pdf
    • http://spencerhostettercpa.com/uploads/1/3/1/4/131452840/saxegotitipaj.pdf
    • http://bodiesbysarah.com/uploads/1/3/1/3/131398246/c46efd75.pdf
    • http://nectaralchemy.ca/uploads/1/3/1/4/131436997/6c85f51e5504.pdf
    • http://empowermilwaukee.org/uploads/1/3/0/6/130622051/xipixow.pdf
    • http://lhiden.com/uploads/1/3/0/2/130272918/2516797.pdf
    • http://tahoerealestatetalk.com/uploads/1/3/0/7/130776151/rexeg.pdf
    • http://teplinfinancial.com/uploads/1/3/0/5/130539935/jutezizilofixat.pdf

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