Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ec1164a4a58458a…

MALICIOUS

PDF

20.0 KB Created: 2019-05-03 05:10:09 +01:00 Authoring application: mPDF 5.7
MD5: bff75d6fe8b96740d5361e5f34750208 SHA-1: 2507f9a5f54ad2684ce6a5ffa2524bef9f8fe5dc SHA-256: 4ec1164a4a58458abd1b73a18659a1ad87f929eee4bae438527be2dc53b5082c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier as malicious and contains a large number of embedded external links. The primary attack pattern appears to be a link farm designed to manipulate search engine results or distribute further malicious content. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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/6738739737732735/Of-Sinking-Ships-and-Broken-Walls-The-Repairer-of-the-Breach-by-Valerie-A-Beauchene.pdf
    • http://cefasfese.4pu.com/6738739737731731/The-Oasis-by-Valerie-A-Beauchene.pdf
    • http://cefasfese.4pu.com/6738739737735730/The-Auction-by-Valerie-A-Beauchene.pdf
    • http://cefasfese.4pu.com/6738739737731730/Call-Me-Esther-by-Valerie-A-Beauchene.pdf
    • http://cefasfese.4pu.com/6738739737730733/Hope-for-Laodicea-I-Have-Asked-God-by-Valerie-A-Beauchene.pdf
    • http://cefasfese.4pu.com/6738739737730735/As-Lively-Stones-A-Solid-Foundation-by-Valerie-A-Beauchene.pdf
    • http://cefasfese.4pu.com/6738739737735735/The-Making-of-a-Twenty-First-Century-Hero-by-Valerie-A-Beauchene.pdf
    • http://cefasfese.4pu.com/6738739737731735/I-Have-Found-the-Book-The-Power-of-a-Tender-Heart-by-Valerie-A-Beauchene.pdf
    • http://cefasfese.4pu.com/6738739737730739/Rise-and-Shine-A-Trilogy-on-Revival-for-the-Christian-by-Valerie-A-Beauchene.pdf
    • http://cefasfese.4pu.com/6738739737730734/Called-by-Name---In-The-Shadow-of-The-Almighty-The-Wonders-of-Practical-Christianity---A-Teaching-Series---Vol-4-by-Valerie-A-Beauchene.pdf
    • http://cefasfese.4pu.com/3732731736731737/More-Walls-Broken-by-Tim-Powers.pdf
    • http://cefasfese.4pu.com/9739734735734731/Star-Wars-Fanon---Capital-Ships-Lucrehulk-Class-Battleships-New-Republic-Capital-Ships-Republic-Capital-Ships-Star-Destroyers-True-Republic-Capital-Ships-Astraeus-Class-Battleship-Contessa-Entarian-Olean-Erebos-Esvelde-Federation-Swarm-Freedom-by-Source-Wikipedia.pdf
    • http://cefasfese.4pu.com/5730732739736739/The-Book-of-Old-Ships-From-Egyptian-Galleys-to-Clipper-Ships-by-Henry-B-Culver.pdf
    • http://cefasfese.4pu.com/1731736735733736734/Viking-Age-Ships-And-Shipbuilding-In-Hedeby-Haithabu-And-Schleswig-Ships-And-Boats-Of-The-North-by-Ole-Crumlin-Pedersen.pdf
    • http://cefasfese.4pu.com/3734739733738736/Beyond-These-Walls-Walls-2-by-J-L-Berg.pdf
    • http://cefasfese.4pu.com/4734733734731734/Easy-Sinking-by-Cecilia-Ryan.pdf
    • http://cefasfese.4pu.com/8735735737734736/The-Sinking-of-the-Titanic-by-Bruce-M-Caplan.pdf
    • http://cefasfese.4pu.com/7739731734739732/The-Sinking-of-the-Bismarck-The-Death-of-a-Flagship-by-Will-Berthold.pdf
    • http://cefasfese.4pu.com/1737735736735738/Storm-Sisters---The-Sinking-World-by-Mintie-Das.pdf
    • http://cefasfese.4pu.com/3736738734739733/Fatal-Voyage-The-Sinking-of-the-USS-Indianapolis-by-Dan-Kurzman.pdf
    • http://cefasfese.4pu.com/6738739737730734/Ca

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