Malicious PDF — malware analysis report

Static analysis result for SHA-256 659010c17aa48bca…

MALICIOUS

PDF

16.6 KB Created: 2019-05-01 18:10:54 +01:00 Authoring application: mPDF 5.7
MD5: a38dbfa28ad06eea8b190f9f2a797f82 SHA-1: 33be91365ee810ec33829d1af8df549ae261a7c0 SHA-256: 659010c17aa48bcac80c9fae1479fc54c7cf9f83a48dcb85b81ddb2a47999536
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm, which is a common technique for SEO manipulation or distributing malicious content. While no scripts were extracted, the ML classifier and the critical heuristic indicate malicious intent. The embedded URLs, though marked as benign in isolation, are part of this larger malicious pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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/3098095099096/Supernatural-Noir-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/3098098090090/Lovecraft-Unbound-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/1099094095096092/HAUNTED-ASYLUMS-HAUNTED-CEMETERIES-The-creepiest-places-on-earth-haunted-asylums-haunted-cemeteries-haunted-forests-haunted-woods-True-Tales-of-Haunted-Morgues-Haunted-Forests-Book-1-by-James-Pattern.pdf
    • http://loaminoo.linkpc.net/1090095094097096093/Off-Limits-Tales-of-Alien-Sex-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/4098096091098097/Mad-Hatters-and-March-Hares-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/2096091094097/The-Dark-New-Ghost-Stories-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/2095098095090/Inferno-New-Tales-of-Terror-and-the-Supernatural-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/2093091098098093/Black-Thorn-White-Rose-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/2095099092091/The-Year-s-Best-Fantasy-First-Annual-Collection-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/2095098098091/Silver-Birch-Blood-Moon-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/2096096098097/After-Nineteen-Stories-of-Apocalypse-and-Dystopia-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/2090092098096095/Black-Swan-White-Raven-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/4098092095093094/Swan-Sister-Fairy-Tales-Retold-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/2096091093092/The-Faery-Reel-Tales-from-the-Twilight-Realm-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/2090093090098093/Swan-Sister-Fairy-Tales-Retold-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/5093095093090096/The-Year-s-Best-Fantasy-and-Horror-Fifth-Annual-Collection-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/2092091096098091/Naked-City-Tales-of-Urban-Fantasy-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/2090092098097092/A-Wolf-at-the-Door-And-Other-Retold-Fairy-Tales-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/4094095098090096/The-Year-s-Best-Fantasy-and-Horror-Sixteenth-Annual-Collection-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net/2095099090099/The-Year-s-Best-Fantasy-and-Horror-Fourth-Annual-Collection-by-Ellen-Datlow.pdf

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