Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a46844cee9433e8…

MALICIOUS

PDF

24.5 KB Created: 2020-04-07 13:40:07 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0956c9479fb5d61d85f0b455ed434977 SHA-1: 6a038c2183924b49299909b319d6bd42355845b4 SHA-256: 4a46844cee9433e8e8001b523661fe24957f02a845170acdd3d895967777f4b4
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique commonly used for SEO poisoning or to redirect users to malicious websites. The ML classifier strongly indicated maliciousness. The embedded links, such as http://revival-recovery.com/uploads/1/3/0/7/130775974/130775974.html#ryobi+tek4+battery+charger, suggest a lure to a potentially compromised or malicious page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://revival-recovery.com/uploads/1/3/0/7/130775974/130775974.html#ryobi+tek4+battery+charger
    • http://paradeon.net/uploads/1/3/0/4/130435905/2b97a6.pdf
    • http://phoenixvillefirstfriday.com/uploads/1/3/0/5/130590334/memano.pdf
    • http://paintedplanetlicensing.com/uploads/1/3/0/7/130740441/8848730.pdf
    • http://sardogssearchandrescue.net/uploads/1/3/0/6/130639648/keludozi.pdf
    • http://amazonfreshdirect.com/uploads/1/3/0/2/130270897/8496468.pdf
    • http://gosiacalderon.com/uploads/1/3/0/4/130491322/2239cc2dc431651.pdf
    • http://www.dcnotaryopennow.com/uploads/1/3/0/6/130639377/xefamezeganelu.pdf
    • http://heartyway.com/uploads/1/3/0/4/130491253/715694.pdf
    • http://photoprintingcases.com/uploads/1/3/0/5/130544132/fe1bcef44544006.pdf
    • http://villacodiba.com/uploads/1/3/1/0/131070306/vituxenura_sijulivi_jalutifalob_terazuzi.pdf
    • http://northstarholistic.com/uploads/1/3/0/2/130287886/fec1719a.pdf
    • http://appexchangereviews.com/uploads/1/3/0/4/130483514/1990218.pdf

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