Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b2c74512c747513…

MALICIOUS

PDF

16.5 KB Created: 2019-11-07 21:53:33 +00:00 Authoring application: mPDF 5.7
MD5: 53086ee09da986cc2f9e5369f8fa769c SHA-1: 5a473ee05f8d06216a050e39a2859c72d3c6969c SHA-256: 0b2c74512c74751303b61f2e2b15cc58684e34d56a550d9b6a73b3e200e5fcf2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. While many of these URLs are marked as benign, the sheer volume and the heuristic firing suggest a malicious intent, possibly for SEO manipulation or to redirect users to malicious sites. No scripts were extracted, but the presence of embedded URLs points to a potential initial access vector via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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/3735732739730735/The-Soul-Spell-Fae-Academy-by-A-Y-Venona.pdf
    • http://cefasfese.4pu.com/3730738737737733/A-Spell-Cast-Volume-One-Seven-Spell-stories-1-by-Tessa-Stokes.pdf
    • http://cefasfese.4pu.com/1730738734734733738/Venona-Decoding-Soviet-Espionage-in-America-by-John-Earl-Haynes.pdf
    • http://cefasfese.4pu.com/4730733738732738/The-Academy-Making-of-a-Ruler-The-Eagle-King-s-Academy-1-by-C-C-Mon-.pdf
    • http://cefasfese.4pu.com/4735738736734735/The-Academy-Volume-One-The-Academy-1-3-by-Maxine-Mansfield.pdf
    • http://cefasfese.4pu.com/4736739735739734/The-Crimson-Spell-Volume-2-Crimson-Spell-2-by-Ayano-Yamane.pdf
    • http://cefasfese.4pu.com/1731738736730735731/The-Umbrella-Academy-Suite-Apocaliptica-Segundo-Acto-Umbrella-Academy-edici-n-r-stica-2-by-Gerard-Way.pdf
    • http://cefasfese.4pu.com/8736734732732735/Star-Wars-Jedi-Academy-The-Phantom-Bully-Jedi-Academy-3-by-Jeffrey-Brown.pdf
    • http://cefasfese.4pu.com/3734735734732731/Soul-Whispers-II-Secret-Alchemy-of-the-Elements-in-Soul-Coaching-Soul-Whispers-2-by-Denise-Linn.pdf
    • http://cefasfese.4pu.com/4733737733731733/Vampire-Academy-Dimitri-s-POV-Vampire-Academy-1-2-by-Shelby-Petrie.pdf
    • http://cefasfese.4pu.com/1734733739738737/Princess-Academy-Princess-Academy-1-by-Shannon-Hale.pdf
    • http://cefasfese.4pu.com/1731736731734739/Nightmare-Academy-Nightmare-Academy-1-by-Dean-Lorey.pdf
    • http://cefasfese.4pu.com/4734739732738/Vampire-Academy-Vampire-Academy-1-by-Richelle-Mead.pdf
    • http://cefasfese.4pu.com/2732731730731732/Vampire-Academy-Vampire-Academy-1-5-by-Richelle-Mead.pdf
    • http://cefasfese.4pu.com/3732731732733/Vampire-Academy-Vampire-Academy-1-by-Richelle-Mead.pdf
    • http://cefasfese.4pu.com/1730736735734737/The-Covert-Academy-The-Covert-Academy-1-by-Peter-Laurent.pdf
    • http://cefasfese.4pu.com/2733730734736734/Vampire-Academy-Vampire-Academy-1-by-Richelle-Mead.pdf
    • http://cefasfese.4pu.com/6736736732/Academy-of-Assassins-Academy-of-Assassins-1-by-Stacey-Brutger.pdf
    • http://cefasfese.4pu.com/3732738736734739/Vampire-Academy-Vampire-Academy-1-by-Richelle-Mead.pdf
    • http://cefasfese.4pu.com/7730737735738/Vampire-Academy-Vampire-Academy-1-by-Richelle-Mead.pdf

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