Malicious PDF — malware analysis report

Static analysis result for SHA-256 92d5b31d8e920ef9…

MALICIOUS

PDF

15.5 KB Created: 2019-05-02 05:22:06 +01:00 Authoring application: mPDF 5.7
MD5: ad2e776766f98b8847025b595d777ba4 SHA-1: c027f4809d6c3748a88f7257325e51fe0829ce5b SHA-256: 92d5b31d8e920ef9deb06eaf9ce29c14e487f3c76533dff21dda23d995c9b92e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF was flagged by a machine learning classifier as malicious. Static analysis revealed a PDF SEO link farm containing 21 external links, predominantly to URLs hosted on 'cefasfese.4pu.com'. These links appear to be designed to lure users to potentially malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

Heuristics 2

  • 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.
  • 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://cefasfese.4pu.com/8739737730739731/God-s-Garden-Sketches-Drawings-and-Watercolors-by-Norman-Matheis.pdf
    • http://cefasfese.4pu.com/7730731735738738/Auguste-Rodin-Drawings-Watercolors-by-Antoinette-Le-Normand-Romain.pdf
    • http://cefasfese.4pu.com/8737734738737733/Richard-Lindner-Catalogue-Raisonne-of-Paintings-Watercolors-and-Drawings-by-Werner-Spies.pdf
    • http://cefasfese.4pu.com/1730733730739731735/Sketches-of-Po-s-Poems-amp-Drawings-by-James-Just.pdf
    • http://cefasfese.4pu.com/1737739732738/Ralph-Rapson-Sketches-and-Drawings-from-Around-the-World-by-Ralph-Rapson.pdf
    • http://cefasfese.4pu.com/1730736732730735738/A-Pocketful-of-Watercolors-by-Philip-Enquist.pdf
    • http://cefasfese.4pu.com/8737734738737734/Richard-Lindner-Paintings-and-Watercolors-1948-1977-by-Judith-Zilczer.pdf
    • http://cefasfese.4pu.com/8739737730730735/Meet-Kai-lan-by-Mickie-Matheis.pdf
    • http://cefasfese.4pu.com/8739737730738737/Gymnastics-Fun-by-Mickie-Matheis.pdf
    • http://cefasfese.4pu.com/8739737731737737/The-Butterfly-Parade-by-Mickie-Matheis.pdf
    • http://cefasfese.4pu.com/8739737732735732/Nella-and-the-Dragon-by-Mickie-Matheis.pdf
    • http://cefasfese.4pu.com/8739737730739739/Jans-Abenteuer-by-Elisabeth-Matheis.pdf
    • http://cefasfese.4pu.com/8739737730730739/Babysitting-Blues-by-Mickie-Matheis.pdf
    • http://cefasfese.4pu.com/8739737730739733/Peanuts-Mad-Libs-by-Mickie-Matheis.pdf
    • http://cefasfese.4pu.com/7737733736731736/Herb-Garden-Design-Planting-with-Purpose-The-garden-bookshelf-by-Ethne-Clarke.pdf
    • http://cefasfese.4pu.com/8739737733736736/Inverted-Edge-Tactics-How-to-cut-someone-off-of-you-by-George-F-Matheis-Jr.pdf
    • http://cefasfese.4pu.com/4736739730736732/Kai-lan-s-Great-Trip-to-China-by-Mickie-Matheis.pdf
    • http://cefasfese.4pu.com/8739737731736731/Tim-und-Jessica-finden-den-Schatz-by-Elisabeth-Matheis.pdf
    • http://cefasfese.4pu.com/8739737731730730/The-Search-for-the-Oopsy-Daisy-by-Mickie-Matheis.pdf
    • http://cefasfese.4pu.com/4735735731739732/Humility-Garden-Garden-of-Salt-1-by-Felicity-Savage.pdf
    • http://cefasfese.4pu.com/8

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