Malicious PDF — malware analysis report

Static analysis result for SHA-256 84e5177be78ea3b5…

MALICIOUS

PDF

16.4 KB Created: 2019-04-30 05:10:09 +01:00 Authoring application: mPDF 5.7
MD5: a2db1a0c86505676c7de422cee78cd3a SHA-1: dc32d7bcb2977b4b84eb089584377063f5b4f655 SHA-256: 84e5177be78ea3b57220e49590dabc887a7c1ea29ccd2e99a08a1ca6c42593e1
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various book titles. While the URLs themselves are marked as benign, the sheer volume and structure suggest a malicious intent, possibly for SEO manipulation or to distribute further payloads. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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://loaminoo.linkpc.net/3094099090099090/The-Man-From-U-N-D-E-A-D---Zombie-Apocalypse-Now-The-Man-From-U-N-D-E-A-D-2-by-Darren-Humphries.pdf
    • http://loaminoo.linkpc.net/4090096095091096/Zombie-Apocalypse-Fightback-Zombie-Apocalypse-2-by-Stephen-Jones.pdf
    • http://loaminoo.linkpc.net/9092090090099/Love-amp-the-Zombie-Apocalypse-Zombie-Apocalypse-1-by-Chelsea-Luna.pdf
    • http://loaminoo.linkpc.net/3094099096099091/To-Infinity-by-Darren-Humphries.pdf
    • http://loaminoo.linkpc.net/3094099090097098/The-Man-From-U-N-D-E-A-D---The-Curious-Case-Of-The-Kidnapped-Chemist-by-Darren-Humphries.pdf
    • http://loaminoo.linkpc.net/4094099090095095/Zombie-Country-Zombie-Apocalypse-2-by-Samantha-Hoffman.pdf
    • http://loaminoo.linkpc.net/1092096090095096/Zombie-Island-Zombie-Apocalypse-1-by-Samantha-Hoffman.pdf
    • http://loaminoo.linkpc.net/6091097090095092/Dawn-of-the-Apocalypse-A-Zombie-Apocalypse-Novel-by-T-W-Gallier.pdf
    • http://loaminoo.linkpc.net/3099094099094094/Apocalypse-Z-A-Zombie-Novel-by-G-E-Swanson.pdf
    • http://loaminoo.linkpc.net/2091094092095091/Vegan-Zombie-Apocalypse-by-Wol-vriey.pdf
    • http://loaminoo.linkpc.net/4093097094097094/Shamblers-The-Zombie-Apocalypse-by-Andrew-Cormier.pdf
    • http://loaminoo.linkpc.net/4090097090098094/Zombie-Apocalypse-Now-Part-1-by-Rachel-Tsoumbakos.pdf
    • http://loaminoo.linkpc.net/3095091098098099/Apocalypse-Z-Uncommon-Ground-Zombie-Novel-2-by-G-E-Swanson.pdf
    • http://loaminoo.linkpc.net/1091096097094099094/The-End-of-the-Beginning-Zombie-Apocalypse-by-Giovanni-L-Crimi.pdf
    • http://loaminoo.linkpc.net/1093092099099098/Trudge-Surviving-the-Zombie-Apocalypse-1-by-Shawn-Chesser.pdf
    • http://loaminoo.linkpc.net/3090098098091/White-Trash-Zombie-Apocalypse-by-Diana-Rowland.pdf
    • http://loaminoo.linkpc.net/1097096095090096/Fat-Zombie-Stories-of-Unlikely-Survivors-from-the-Apocalypse-by-Paul-Mannering.pdf
    • http://loaminoo.linkpc.net/4090096099091096/Sheila-Baby-s-First-Zombie-Apocalypse-by-Brian-Malbon.pdf
    • http://loaminoo.linkpc.net/5097095094098/Dead-Rage-A-Zombie-Apocalypse-by-Nicholas-Ryan.pdf
    • http://loaminoo.linkpc.net/3095098099096097/Trudge-Surviving-the-Zombie-Apocalypse-1-by-Shawn-Chesser.pdf
    • http://loaminoo.linkpc.net/3099094099094094/Apocalypse-Z-A-Zombie-Novel-by-G-E-Swans

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