Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b56436a2283c164…

MALICIOUS

PDF

25.3 KB Created: 2020-05-14 07:38:57 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7f73fbd53dd140d1c14c18d5219b30aa SHA-1: 1a751102e060bdae630039f004cfdfa9dd16c381 SHA-256: 6b56436a2283c164c9e02a06418adb31bb6353e5506ccf927a808f062fb81474
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document is identified as a malicious image-only lure, typical of phishing campaigns. It contains numerous external links, including one to 'patriciawilsons.net', which likely serves as the initial landing page for the attack. The presence of many linked PDFs suggests a link farm designed to obscure the ultimate destination or spread the malicious content across multiple domains. No scripts were extracted, but the structure strongly indicates a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 25 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://patriciawilsons.net/uploads/1/3/0/7/130740080/130740080.html#mini+split+heat+pump+consumer+reports
    • http://williamshaven.com/uploads/1/3/0/5/130588698/vuxodisivavivutako.pdf
    • http://erpcustomdesigns.com/uploads/1/3/0/3/130312950/0a62f43f.pdf
    • http://gomezsecurity.com/uploads/1/3/1/3/131380456/b2c771df.pdf
    • http://gloriacakes.com/uploads/1/3/0/9/130969407/rajeweliz-tufedigizupu-gexefimufi-bapup.pdf
    • http://nautanotherbakeshop.com/uploads/1/3/1/4/131437640/vavazemavodozezejif.pdf
    • http://rentopiaeventrentals.com/uploads/1/3/0/6/130639573/tozuga.pdf
    • http://monarchguiding.com/uploads/1/3/0/3/130313561/7619183.pdf
    • http://fredachaney.com/uploads/1/3/0/7/130776783/7930647.pdf
    • http://eastpointtradecenter.com/uploads/1/3/1/4/131406650/zodeparofebex-libos.pdf
    • http://johnguillory.net/uploads/1/3/0/6/130621727/8654c844f886c.pdf
    • http://timberwaypropertymaintenance.com/uploads/1/3/0/8/130874455/tesub.pdf

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