Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f9832af59eec85d…

MALICIOUS

PDF

28.9 KB Created: 2020-04-06 07:29:47 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b186cc11277e3366400678452f9cbbb4 SHA-1: 111505394fecf118f1d5a69152e0f4a613bb4f7b SHA-256: 6f9832af59eec85ddc6ace302d662758e3c2dd26fdd09a6371c2f03c02386e78
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links to external PDF files, suggesting a link farm or a method to distribute further malicious content. The primary lure appears to be related to 'Husky 2600 psi pressure washer replacement hose', which is likely a deceptive tactic to encourage clicks on the numerous generated SEO-like links. The ML classifier strongly indicated maliciousness, supporting the suspicious nature of the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://familypromiseirvinggala.com/uploads/1/3/1/4/131438164/131438164.html#husky+2600+psi+pressure+washer+replacement+hose
    • http://firesidefarm.org/uploads/1/3/0/9/130969683/4629378.pdf
    • http://school-golf-team-gear.com/uploads/1/3/1/3/131379680/3698937.pdf
    • http://tuareapr.com/uploads/1/3/0/9/130969470/38234d671.pdf
    • http://trailsrusexpo.com/uploads/1/3/0/5/130550697/3ab6ccf7f8.pdf
    • http://decolonizepnw.com/uploads/1/3/0/5/130589409/d204565412f0f23.pdf
    • http://opsnav.com/uploads/1/3/0/2/130273735/fezukigematuvem.pdf
    • http://ruachcreation.com/uploads/1/3/0/5/130539658/2984120.pdf
    • http://mail.nevideofilms.com/uploads/1/3/1/3/131398221/6355745.pdf
    • http://thevintagechair.net/uploads/1/3/0/6/130605406/samozizuli.pdf
    • http://topdollar4junk.com/uploads/1/3/0/5/130545278/zipofuvokonu.pdf
    • http://strongholdequineequipment.com/uploads/1/3/1/0/131070590/7849451.pdf

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