Malicious PDF — malware analysis report

Static analysis result for SHA-256 daa847690fc2f496…

MALICIOUS

PDF

13.7 KB Created: 2020-05-16 12:42:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f32e23187fda9bbd4e68223e3d39dc7 SHA-1: 73a34f99c0765ab94118f1a5083df81cd722df73 SHA-256: daa847690fc2f4961653ac34321ef4ef11c9ead7295ff33362b6174b607df560
82 Risk Score

Malware Insights

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

The PDF is an image-only lure, typical of phishing campaigns. It contains numerous external links, including one to transf-air.com, which likely serves as the initial landing page for the attack. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of generated links, suggesting an attempt to create a link farm for SEO manipulation or to distribute the malicious payload across multiple domains. No scripts were extracted, but the structure strongly suggests a social engineering attack.

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 13 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://transf-air.com/uploads/1/3/0/7/130776114/130776114.html#after+effects+2d+animation+templates+free
    • http://bloomcreations.net/uploads/1/3/0/5/130540040/5809246.pdf
    • http://environment-sos.com/uploads/1/3/1/4/131437261/da8b5a5fcb2474.pdf
    • http://maslineconstruction.com/uploads/1/3/0/9/130970012/506c2ea101a.pdf
    • http://elliportraits.net/uploads/1/3/1/4/131406288/farigavotuwixinozago.pdf
    • http://djjeremiah.com/uploads/1/3/1/3/131383532/widoseb.pdf
    • http://almightybandz.com/uploads/1/3/0/8/130814715/4015629.pdf
    • http://afewof.net/uploads/1/3/0/7/130740420/7305922.pdf

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