Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5442a23106d6fab…

MALICIOUS

PDF

26.6 KB Created: 2020-04-07 03:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 634d2fb4f833aeea08f41e817789a5a8 SHA-1: beec3897d51eb9eba79a74895b8e91f4972dc0d7 SHA-256: f5442a23106d6fab96034251f50930fbf12a079d2741796c18ff5e3201434b09
82 Risk Score

Malware Insights

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

The PDF file is identified as an image-only lure, typical of phishing campaigns. It contains a click-outward action pointing to a URL which, in turn, leads to a farm of other PDF files hosted on various domains. This suggests a tactic to either distribute further malicious content or engage in SEO poisoning to manipulate search results. No scripts were extracted, limiting the analysis of direct payload execution.

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 26 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://marionrodrigue.com/uploads/1/3/0/2/130289317/130289317.html#como+rezar+el+rosario+d+la+divina+misericordia
    • http://linaellinorpt.com/uploads/1/3/0/6/130621075/xizutazikobuzet-segelav.pdf
    • http://ljibe.com/uploads/1/3/0/8/130814529/serom_koxuropodajuf_geletomerupir.pdf
    • http://cafealbala.com/uploads/1/3/0/6/130621839/a7bad97151b0836.pdf
    • http://greenjeansstudio.com/uploads/1/3/0/6/130620265/14d7ca7ef.pdf
    • http://borderautoservices.com/uploads/1/3/0/5/130589191/lozezom-vasaxusinutine-sozime.pdf
    • http://mojibliss.com/uploads/1/3/0/7/130738859/dunadaxu.pdf

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