Malicious PDF — malware analysis report

Static analysis result for SHA-256 48d9efbee2681f9b…

MALICIOUS

PDF

14.1 KB Created: 2019-04-29 23:27:49 +01:00 Authoring application: mPDF 5.7
MD5: d7c54c82c268e6068a125f79b06391e2 SHA-1: e464bab7f8cc4abc1ea1936f6c631370c7268326 SHA-256: 48d9efbee2681f9b03f71ef4173f95c3d188260dba967df39d48ab144b515b3f
90 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While most of the linked URLs themselves are classified as benign, the sheer volume and structure suggest a malicious intent, likely for SEO poisoning or to redirect users to potentially harmful content. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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://muicuiu.dumb1.com/4a05a05a06a02a02/How-To-Poo-At-Work-by-Mats.pdf
    • http://muicuiu.dumb1.com/1a02a05a00a03a00/Fire-Engelsfors-2-by-Mats-Strandberg.pdf
    • http://muicuiu.dumb1.com/1a01a01a07a04a00a09/Noveller-f-r-V-rldens-Barn-2009-by-Mats-S-derlund.pdf
    • http://muicuiu.dumb1.com/5a02a02a03a03/Trouble-in-Trondheim-Bikers-and-Gangsters-by-Mats-Vederhus.pdf
    • http://muicuiu.dumb1.com/3a00a05a05a00a05/The-Taken-by-Inger-Ash-Wolfe.pdf
    • http://muicuiu.dumb1.com/5a01a06a06a03a01/it-by-Inger-Christensen.pdf
    • http://muicuiu.dumb1.com/2a02a08a02a09a05/The-Taken-by-Inger-Ash-Wolfe.pdf
    • http://muicuiu.dumb1.com/6a07a01a05a02/alphabet-by-Inger-Christensen.pdf
    • http://muicuiu.dumb1.com/8a00a06a09a01a04/Butterfly-Valley-A-Requiem-by-Inger-Christensen.pdf
    • http://muicuiu.dumb1.com/9a08a08a06a03a09/Lady-Inger-of-Ostrat-by-Henrik-Ibsen.pdf
    • http://muicuiu.dumb1.com/3a06a00a06a01a06/The-Taken-Hazel-Micallef-Mystery-2-by-Inger-Ash-Wolfe.pdf
    • http://muicuiu.dumb1.com/9a02a00a05a01a06/Insel-der-nackten-Frauen-by-Inger-Frimansson.pdf
    • http://muicuiu.dumb1.com/6a07a05a03a05a04/The-Cambridge-Companion-to-Thomas-Pynchon-by-Inger-H-Dalsgaard.pdf
    • http://muicuiu.dumb1.com/4a08a04a05a04a03/The-Night-Bell-Hazel-Micallef-Mystery-4-by-Inger-Ash-Wolfe.pdf
    • http://muicuiu.dumb1.com/9a08a08a06a03a07/Under-a-Black-Sky-Part-of-the-Daniel-Trokics-Series-by-Inger-Wolf.pdf
    • http://muicuiu.dumb1.com/1a00a09a03a06a00a07/Letzte-Umarmung-Rolando-Benito-3-by-Inger-Gammelgaard-Madsen.pdf
    • http://muicuiu.dumb1.com/6a00a00a05a09a00/Aikido-Nage-Waza-Throwing-Techniques-in-Traditional-Aikido-B-W-by-Mats-Alexandersson.pdf
    • http://muicuiu.dumb1.com/6a00a00a05a09a02/Aikido-Nage-Waza-Throwing-Techniques-in-Traditional-Aikido-Color-by-Mats-Alexandersson.pdf
    • http://muicuiu.dumb1.com/9a08a08a06a06a06/Rogue-In-Love-Thea-and-Lex-Love-Against-the-Odds-1-by-Inger-Iversen.pdf

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