Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a541008296a9b0…

MALICIOUS

PDF

16.8 KB Created: 2019-05-06 16:54:50 +01:00 Authoring application: mPDF 5.7
MD5: 5a085412e2f5af7af02df09885b86df3 SHA-1: 80320e7ed28b238ce3808b6f753f381026ceaba9 SHA-256: 64a541008296a9b016c594bc2ac09dbc7953ff49cce2e2797fbc1537ce6ac6f3
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files hosted on a dynamic DNS domain. This heuristic, combined with the ML classifier's high confidence, suggests a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/4093099091096092/A-MORE-PERFECT-UNION-SUPREMACY-RISING-Book-II-by-Holly-Brown.pdf
    • http://loaminoo.linkpc.net/5090095097095099/Red-Rising-Red-Rising-Trilogy-1-by-Pierce-Brown.pdf
    • http://loaminoo.linkpc.net/3090095096095091/A-More-Perfect-Union-Why-Straight-America-Must-Stand-Up-for-Gay-Rights-by-Richard-D-Mohr.pdf
    • http://loaminoo.linkpc.net/1093091096094091/Picture-Perfect-Geek-Girl-3-by-Holly-Smale.pdf
    • http://loaminoo.linkpc.net/4098093091098097/Don-t-Try-To-Find-Me-A-Novel-by-Holly-Brown.pdf
    • http://loaminoo.linkpc.net/4099091097091097/Temperatures-Rising-by-Sandra-Brown.pdf
    • http://loaminoo.linkpc.net/6/Golden-Son-Red-Rising-2-by-Pierce-Brown.pdf
    • http://loaminoo.linkpc.net/2094094098097093/Golden-Son-Red-Rising-2-by-Pierce-Brown.pdf
    • http://loaminoo.linkpc.net/9098096093/Rising-Strong-by-Bren-Brown.pdf
    • http://loaminoo.linkpc.net/4098094094096090/Dark-Age-Red-Rising-Saga-5-by-Pierce-Brown.pdf
    • http://loaminoo.linkpc.net/4096091094098093/Iron-Gold-Red-Rising-Saga-4-by-Pierce-Brown.pdf
    • http://loaminoo.linkpc.net/2092092092090099/Iron-Gold-Red-Rising-Saga-4-by-Pierce-Brown.pdf
    • http://loaminoo.linkpc.net/6099097090097/Morning-Star-Red-Rising-Trilogy-3-by-Pierce-Brown.pdf
    • http://loaminoo.linkpc.net/9091094092/Iron-Gold-Red-Rising-Saga-4-by-Pierce-Brown.pdf
    • http://loaminoo.linkpc.net/1092099094097094/Midnight-Rising-John-Brown-and-the-Raid-That-Sparked-the-Civil-War-by-Tony-Horwitz.pdf
    • http://loaminoo.linkpc.net/2091099098095090/Picturing-Perfect-Love-of-My-Life-3-by-Melissa-Brown.pdf
    • http://loaminoo.linkpc.net/1090099097096097095/The-Union-Member-s-Complete-Guide-Everything-You-Want--And-Need--To-Know-about-Working-Union-by-Michael-Mauer.pdf
    • http://loaminoo.linkpc.net/7097095096093/Rising-Strong-The-Reckoning-The-Rumble-The-Revolution-by-Bren-Brown-An-8-Minute-Summary-by-Bern-Bolo.pdf
    • http://loaminoo.linkpc.net/4091098092096099/Ash-Book-One-in-the-Rising-Ash-Saga-by-R-G-Westerman.pdf
    • http://loaminoo.linkpc.net/4099095099094092/Beck-amp-Call-The-Billionaires-Book-2-by-Emma-Holly.pdf

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