Malicious PDF — malware analysis report

Static analysis result for SHA-256 4be8e0eabf8786e2…

MALICIOUS

PDF

16.9 KB Created: 2020-03-26 14:45:05 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 25175e12c24fa7d75c7110b6e641f8b5 SHA-1: 6ee3a729587684b4d42ab16c7f5b07334ed9920c SHA-256: 4be8e0eabf8786e2476bfec5ed1ea00e11d6a9f064c1d32b5f89cf964c711952
112 Risk Score

Malware Insights

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

The PDF document is identified as malicious by an ML classifier and exhibits characteristics of a phishing lure, including being image-heavy with a click-outward action. The document body contains a link to 'http://theredcafe.org/uploads/1/3/0/4/130488416/130488416.html#just+cause+3+serial+key+pc', suggesting a lure related to software serial keys. Additionally, a large number of external PDF links were found, indicating a potential link farm for SEO manipulation or further distribution of malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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 16 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://theredcafe.org/uploads/1/3/0/4/130488416/130488416.html#just+cause+3+serial+key+pc
    • http://krowrx.com/uploads/1/3/0/2/130270885/4824300.pdf
    • http://admin.rlcbuildingservices.com/uploads/1/3/0/8/130814209/webalekoles_felerapejukuli_sifujose.pdf
    • http://wills-senior-pic-1.kaseyfraley-photography.com/uploads/1/3/0/5/130588315/wewosiwi-suxugilir.pdf
    • http://ddwashingtonfoundation.org/uploads/1/3/0/6/130640109/7667962.pdf
    • http://www.hatminder.com/uploads/1/3/0/8/130814769/wetijijuvuv-guroxulip-kasegutizudix-xorixib.pdf
    • http://pcmwebdesign.com/uploads/1/3/0/2/130272095/kutogalipa_vonuzopo.pdf
    • http://templehousepainting.com/uploads/1/3/0/7/130739938/8122577.pdf
    • http://www.southernheartdesign.com/uploads/1/3/0/7/130775841/kokijadati.pdf
    • http://kirraneplanthire.com/uploads/1/3/0/6/130639148/3675380.pdf
    • http://namiokcmetro.com/uploads/1/3/0/2/130288318/7155892.pdf
    • http://goodlifetravelagency.com/uploads/1/3/0/5/130588256/xezuma.pdf
    • http://trinityjamestown.org/uploads/1/3/0/4/130488114/fedorosevid_pepeburimimali.pdf

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