Malicious PDF — malware analysis report

Static analysis result for SHA-256 a65364d37389c56b…

MALICIOUS

PDF

15.6 KB Created: 2020-04-08 13:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 83a535290b7bf6b5232832389c5c6336 SHA-1: 263c0e0af92cd33b4d941be6d1e1a33c09e73be0 SHA-256: a65364d37389c56b5b4cda8d9c3a197dc5a5235b5eff6616fc69f5dae66e7c2e
82 Risk Score

Malware Insights

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

The PDF was identified as an image-only document with an action trigger, typical of a phishing lure. It contains numerous external links, with the primary one being http://slimeofcrunchy.com/uploads/1/3/1/4/131453946/131453946.html#southeast+winter+weather+forecast+2018. The document body itself is largely obfuscated but contains references to the same URL and other PDF files hosted on similar domains, suggesting a link farm designed to distribute malicious content or redirect users to phishing sites.

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 15 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://slimeofcrunchy.com/uploads/1/3/1/4/131453946/131453946.html#southeast+winter+weather+forecast+2018
    • http://popsjohnson.com/uploads/1/3/1/1/131163744/bitovo.pdf
    • http://crownemarketgroup.com/uploads/1/3/0/5/130539074/nunotem.pdf
    • http://baselinefitnesstraining.com/uploads/1/3/1/0/131070044/karadupisubawodizena.pdf
    • http://ad-hoc-admin.com/uploads/1/3/0/4/130488974/vofedi.pdf
    • http://sacredfeminineuprising.com/uploads/1/3/0/6/130604378/73d12e69.pdf
    • http://ajachinger.org/uploads/1/3/1/0/131069744/sitadafazitedu-wetedev-tegiv-welarixosejan.pdf
    • http://www.scalaconcrete.com/uploads/1/3/0/9/1