Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d38438e370ac73a…

MALICIOUS

PDF

12.4 KB Created: 2019-05-07 03:26:45 +01:00 Authoring application: mPDF 5.7
MD5: 6217f6659cad0498de0e7dfe8293f561 SHA-1: 85b5b2710786bf88bb8a7d48f2ae96f3b9e8c964 SHA-256: 6d38438e370ac73a1a8f418f2e991d84b42f66dbd539acfbf2be84c427ede790
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or distribution mechanism. While the specific URLs extracted are currently marked as benign, the heuristic and ML classifier indicate malicious intent. The presence of embedded URLs within the document body further supports this, though no specific script actions were identified.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8780

Heuristics 3

  • 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.
  • ClamAV: Pdf.Malware.Agent-9983408-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Malware.Agent-9983408-0
  • 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/2091098095099099/Wizard-s-Hall-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/6099098096095/Owl-Moon-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/1095093095099095/Except-the-Queen-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/3090094097097099/Hush-Little-Horsie-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/1090092090092096099/Afternoon-of-a-Faun-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/2092098093096096/How-Do-Dinosaurs-Say-I-Love-You-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/4098090096094092/Sleeping-Ugly-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/3097094092096091/The-Magic-Three-of-Solatia-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/4096092098091094/The-Transfigured-Hart-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/1094093098098097/How-Do-Dinosaurs-Go-to-School-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/2097099094099/No-Bath-Tonight-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/2096094090090/Dragonfield-and-Other-Stories-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/1098095096099096/The-Magic-Three-of-Solatia-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/3098091097090096/Pumpkin-Baby-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/1097099092097096/Waking-Dragons-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/2093095099090094/Dragon-s-Blood-Pit-Dragons-1-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/4094096098096099/The-Rogues-Stuart-Quartet-4-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/1091094097099093/How-Do-Dinosaurs-Say-Good-Night-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/5093098091099/The-Young-Merlin-Trilogy-by-Jane-Yolen.pdf
    • http://loaminoo.linkpc.net/8090094091094099/The-Day-Tiger-Rose-Said-Goodbye-by-Jane-Yolen.pdf

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