Malicious PDF — malware analysis report

Static analysis result for SHA-256 de3565c28ae2ae5e…

MALICIOUS

PDF

19.9 KB Created: 2020-04-09 23:10:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 77c30d2db4f0c5723d150021da75fa18 SHA-1: 918831e117f23eae613c30ba68643efc081e8e47 SHA-256: de3565c28ae2ae5e93f03030a6d95edc3bb6b91d477b387cac2067b71b2b6064
82 Risk Score

Malware Insights

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

The PDF file is identified as an image-only lure, typical for phishing campaigns. It contains numerous external links, with the primary one being http://regenerativemedicalsolution.com/uploads/1/3/1/6/131636951/131636951.html#the+walking+dead+192. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of generated SEO links, suggesting an attempt to obscure the true malicious destination or to distribute traffic. No scripts were extracted from this sample.

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://regenerativemedicalsolution.com/uploads/1/3/1/6/131636951/131636951.html#the+walking+dead+192
    • http://truenorthexperts.com/uploads/1/3/0/8/130814788/julagawoze.pdf
    • http://kidsanduscenter.org/uploads/1/3/0/4/130476368/sisat.pdf
    • http://kaunas-tourism.com/uploads/1/3/0/7/130738973/4532238.pdf
    • http://urbanforestoperations.com/uploads/1/3/1/3/131379394/fd50c.pdf
    • http://futuresitesinc.com/uploads/1/3/0/3/130323962/gifupuwe_waloruvo_xuxuv_lokozapevako.pdf
    • http://krmenterprise.com/uploads/1/3/0/7/130776888/negoxisizejajem-kejutozusemaw-jineguwonapo.pdf
    • http://journies.site/uploads/1/3/0/4/130483766/d3fdd5cfc1d.pdf
    • http://madisontavernchicago.com/uploads/1/3/0/2/130287428/1445166.pdf

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