Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a8bca12d358920c…

MALICIOUS

PDF

21.4 KB Created: 2020-04-01 20:46:34 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4379b57606d25c1905e2615dc7da9bcc SHA-1: fbe0084b824b409c48904986a423d852727c56e2 SHA-256: 0a8bca12d358920c423a6dea7485bff08ad39b86be4e240d9cfd03479bc72ab5
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file is identified as malicious due to its structure, which resembles a screenshot lure designed to trick users into clicking embedded links. It contains numerous external links, suggesting a link farm or redirection to malicious sites. The ML classifier strongly supports the malicious verdict, and the presence of embedded URLs indicates an attempt to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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 21 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://phigammachisfsu.com/uploads/1/3/0/5/130589009/130589009.html#depois+da+tempestade+joanna+de+angelis
    • http://liltrevwrg.com/uploads/1/3/0/7/130740497/xadetabowa.pdf
    • http://discover-bourbon.com/uploads/1/3/0/6/130604307/xowiruvodo.pdf
    • http://prairiebees.com/uploads/1/3/0/5/130539842/685db99d5c2.pdf
    • http://bellesandbeausball.com/uploads/1/3/1/0/131070178/dafejamidoku-ginibusuvipidu.pdf
    • http://charlesehrenpreis.com/uploads/1/3/0/4/130489423/6465955.pdf
    • http://christopherreyesstudio.com/uploads/1/3/1/4/131453399/fozusegowedebujas.pdf
    • http://travelingnurses1.com/uploads/1/3/1/4/131410012/kenasukukepupibapum.pdf
    • http://9f60hnj100.com/uploads/1/3/0/2/130272333/8718953.pdf
    • http://railcitypraiseproject.com/uploads/1/3/0/6/130604517/4ffeceda669d6.pdf
    • http://inmobiliariaq4.com/uploads/1/3/0/6/130604154/wijozubenikupiranab.pdf
    • http://verteschlaw.net/uploads/1/3/0/3/130323510/311af.pdf

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