Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed6caeb376b3a2a7…

MALICIOUS

PDF

30.3 KB Created: 2020-04-14 08:20:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 04165f419f0e5370cad637413143d81d SHA-1: f1fe857225ee657ca9c30d35e5eafbb81287df95 SHA-256: ed6caeb376b3a2a77b9c9f12c3c10b5805dc3c15d8d551a64d3b6cb555d7e368
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which are numerically or generically named, characteristic of a link farm designed to manipulate search engine results or distribute malicious content. The document body, though heavily corrupted, contains text related to tax reporting and the wkhtmltopdf application, suggesting a lure to trick users into visiting these suspicious URLs. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 3

  • 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.
  • 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://drboduryan.com/uploads/1/3/1/4/131437102/131437102.html#reporting+grantor+trust+income+on+1040
    • http://stayfiercefitness.com/uploads/1/3/0/5/130540788/fojesesoz.pdf
    • http://operationbethlehem.com/uploads/1/3/0/6/130639945/boxafejuxijenuma.pdf
    • http://jerrymandel.com/uploads/1/3/0/6/130621240/pikupagabimofipe.pdf
    • http://prettyyummydiy.com/uploads/1/3/0/6/130621066/vunoladekari.pdf
    • http://buymichaelgptest.com/uploads/1/3/1/6/131637850/8e99b79e5.pdf
    • http://cynthiarichardsforohio.org/uploads/1/3/0/6/130604759/581256.pdf
    • http://paellapartyman.com/uploads/1/3/1/1/131164033/roboju.pdf
    • http://apasst.com/uploads/1/3/1/4/131452837/91e98.pdf
    • http://gracefulriches.com/uploads/1/3/1/4/131437472/todeg.pdf
    • http://kylaevans.com/uploads/1/3/1/4/131406698/2280670.pdf
    • http://fincalosmangosfr.com/uploads/1/3/0/7/130775321/7257192.pdf
    • http://sweettreatsbykris.com/uploads/1/3/0/5/130588716/5820480.pdf
    • http://whitestagfitness.com/uploads/1/3/0/8/130814009/238bfc8.pdf

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