Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbf7390132315621…

MALICIOUS

PDF

16.4 KB Created: 2020-04-13 17:38:02 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9fb3932422861788da3df3d418adcc40 SHA-1: 1fae4fe42c34bd78f204df4f7d2f20f56f766049 SHA-256: dbf7390132315621835b1966ca9cfef15a85515b29ad9095b9d26cd70079ac37
112 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document is identified as an image-only lure, typical for phishing campaigns. It contains numerous external links, suggesting a link farm designed to redirect users to malicious sites. The ML classifier strongly indicates malicious intent. No scripts were extracted, but the presence of multiple suspicious URLs points towards a delivery mechanism for further payloads or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9850

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://rapidactionphotography.com/uploads/1/3/0/4/130435781/130435781.html#champak+story+book+in+english+free
    • http://spacecreationdesign.com/uploads/1/3/0/9/130969352/rigawinerutobor.pdf
    • http://hotelsthepas.net/uploads/1/3/0/2/130287229/zuxiwabi.pdf
    • http://8ballatc.com/uploads/1/3/0/7/130739405/batebe.pdf
    • http://garagedooroahu.com/uploads/1/3/0/4/130491079/fuxuluzanaxobi.pdf
    • http://jenniferratcliffe.org/uploads/1/3/0/8/130874544/1d20c1d047b.pdf
    • http://crystalsea.co/uploads/1/3/1/0/131070457/jasozumulop.pdf
    • http://ab-handelsagentur.com/uploads/1/3/0/6/130639763/jimoxavufapivu.pdf
    • http://groundinggrouse.com/uploads/1/3/0/6/130640223/2327847.pdf

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