Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7bd4d634221e3e8…

MALICIOUS

PDF

19.7 KB Created: 2020-05-02 19:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 266a59390ed6b0b93a720d6b6d131d84 SHA-1: d9863357af42b724e2d701cafa6300a781cb5240 SHA-256: d7bd4d634221e3e8adec251386d9d84bd662d36311133b5799b65fc8d147ece3
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 of phishing campaigns. It contains a mass of external links, suggesting a link farm for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicates malicious intent. No scripts were extracted, but the PDF structure and embedded URLs point to a delivery mechanism for potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 19 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://1ebikes.net/uploads/1/3/1/8/131871581/131871581.html#chemguide+carboxylic+acid+reactions
    • http://inno-delta.com/uploads/1/3/0/7/130739450/e772a414e4fb7e.pdf
    • http://focosoft.net/uploads/1/3/1/4/131453193/duvalevuvunatikus.pdf
    • http://doseofdinero.com/uploads/1/3/1/3/131382320/4028815.pdf
    • http://raghavmehta.com/uploads/1/3/0/2/130270977/tejipifenuxozo-palusebave-junaxuxoxetotug.pdf
    • http://rkfinancialgroup.net/uploads/1/3/0/2/130291785/rujewif.pdf
    • http://campkennedy.com/uploads/1/3/0/8/130874332/253915.pdf
    • http://mollsmc.com/uploads/1/3/1/4/131406879/lejexurerorubifodatu.pdf
    • http://titanofficefurniture.com/uploads/1/3/0/2/130291527/betesudisudikem.pdf
    • http://angel444energy.com/uploads/1/3/0/4/130436354/nomozapixujanu.pdf
    • http://avira-residence.ro/uploads/1/3/1/0/131071145/01c2a.pdf
    • http://pbsaz.us/uploads/1/3/0/8/130874066/8df2d939aefcd6a.pdf
    • http://tonytatatraining.com/uploads/1/3/0/8/130873906/fc6bc04cc71.pdf

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