Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0ba7424b5aa7342…

MALICIOUS

PDF

37.2 KB Created: 2020-04-15 23:53:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c52b084be7f9976bcf232a6124f43db2 SHA-1: aa7015152d4a8a4207059cc54a0fe7d8a5d0ec7d SHA-256: f0ba7424b5aa7342c0c47314853b3b1008f8a2bfa86237654ca5117f6cea61e2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, many of which are numerically or generically named PDFs hosted on various domains, indicating a link farm or SEO spam tactic. The document body mentions 'Tema whatsapp aero ios', suggesting a lure to attract users interested in WhatsApp modifications. The primary heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is a malicious PDF designed to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9859

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://theweightlosscoach.net/uploads/1/3/0/8/130814216/130814216.html#tema+whatsapp+aero+ios
    • http://bourioanatoliesfilms.net/uploads/1/3/0/8/130815351/5178429.pdf
    • http://estebancota.com/uploads/1/3/0/5/130588885/dezelukojedum.pdf
    • http://lovedponies.com/uploads/1/3/0/3/130379305/vefunizawutaboruwo.pdf
    • http://kydairy.com/uploads/1/3/1/0/131070888/96b97d.pdf
    • http://homegrowncarolina.net/uploads/1/3/0/7/130739375/e0aad9c1a1ad6.pdf
    • http://thesanctuaryofcapecod.com/uploads/1/3/0/6/130621840/norif-xofuge-wazoveluwebun-bavinuto.pdf
    • http://indieconnectors.com/uploads/1/3/1/4/131405934/xaronujogitafa-butifugixum-kapedutonap.pdf
    • http://tanakaitandbusinesssolutions.com/uploads/1/3/0/7/130739098/takusivirew.pdf
    • http://vector-log.com/uploads/1/3/1/4/131438113/4455363.pdf
    • http://nancyrichy.com/uploads/1/3/0/9/130969937/faa10cdd5.pdf

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