Malicious PDF — malware analysis report

Static analysis result for SHA-256 62546fc0d4b44692…

MALICIOUS

PDF

15.0 KB Created: 2019-05-07 03:16:08 +01:00 Authoring application: mPDF 5.7
MD5: a8f95df54f1f72000b55c906763e6c4a SHA-1: ac56b35fe3529b9f01a8e104c3332e5d7b8dad60 SHA-256: 62546fc0d4b4469295ae3036279ea8af55e44259285a70ed9ca05fdaf26ffd9a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external websites, identified as a 'PDF_SEO_LINK_FARM' heuristic. While the document body is heavily obfuscated, the presence of numerous links suggests an attempt to direct users to potentially malicious or SEO-manipulated content. The ML classifier also flagged this PDF as malicious, increasing confidence in its harmful intent. No scripts were extracted, but the link farm itself is the primary indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/7093096097097095/A-Knight-s-Seduction-Knight-s-5-by-Catherine-Kean.pdf
    • http://loaminoo.linkpc.net/7093096097097090/A-Knight-s-Reward-Knight-s-2-by-Catherine-Kean.pdf
    • http://loaminoo.linkpc.net/2099090092093/A-Knight-s-Persuasion-Knight-s-4-by-Catherine-Kean.pdf
    • http://loaminoo.linkpc.net/2094091097092093/Evie-s-Knight-The-Knight-Series-1-by-Kimberly-Krey.pdf
    • http://loaminoo.linkpc.net/1099099093094099/Being-Sawyer-Knight-Souls-of-the-Knight-1-by-Nicola-Haken.pdf
    • http://loaminoo.linkpc.net/2091098092098096/The-Forever-Knight-The-Bronze-Knight-4-by-John-Marco.pdf
    • http://loaminoo.linkpc.net/7095099092098/Killing-Sam-Knight-The-Knight-Chronicles-2-by-John-Cassian.pdf
    • http://loaminoo.linkpc.net/8096091098097/Wicked-Knight-Knight-Brothers-1-by-Tierney-O-39-Malley.pdf
    • http://loaminoo.linkpc.net/3096093091093096/Knight-s-End-Knight-s-Trilogy-1-by-Jami-Montgomery.pdf
    • http://loaminoo.linkpc.net/3098090097094098/Brooklyn-Knight-Piers-Knight-1-by-C-J-Henderson.pdf
    • http://loaminoo.linkpc.net/1091093099092099/The-Last-Knight-Knight-and-Rogue-1-by-Hilari-Bell.pdf
    • http://loaminoo.linkpc.net/2095097094091097/Darkest-Knight-City-Knight-5-by-T-A-Webb.pdf
    • http://loaminoo.linkpc.net/1092096092095/A-Knight-to-Remember-Knight-2-by-Christina-Dodd.pdf
    • http://loaminoo.linkpc.net/4093094099095096/Once-a-Knight-Knight-1-by-Christina-Dodd.pdf
    • http://loaminoo.linkpc.net/2092099099093096/Her-Rogue-Knight-by-Natasha-Knight.pdf
    • http://loaminoo.linkpc.net/4097097093098099/The-Bathrobe-Knight-Volume-3-The-Bathrobe-Knight-3-by-Charles-Dean.pdf
    • http://loaminoo.linkpc.net/1096099099098096/The-Green-Knight-s-Squire-The-Green-Knight-s-Squire-1-3-Moth-amp-Cobweb-1-3-by-John-C-Wright.pdf
    • http://loaminoo.linkpc.net/7093096097099094/Magnificent-Medieval-Champions-by-Catherine-Kean.pdf
    • http://loaminoo.linkpc.net/7093096098090098/Bound-By-His-Kiss-Novella-by-Catherine-Kean.pdf
    • http://loaminoo.linkpc.net/2092091097099090/Vampire-Knight-Vol-14-Vampire-Knight-14-by-Matsuri-Hino.pdf

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