Malicious PDF — malware analysis report

Static analysis result for SHA-256 da56ba8d6e82aad6…

MALICIOUS

PDF

15.2 KB Created: 2019-05-01 19:18:20 +01:00 Authoring application: mPDF 5.7
MD5: 2052b71646fc27efaf4c62d95ca082c2 SHA-1: 099d8739736880430d27abc0b5d20f9572c93aa6 SHA-256: da56ba8d6e82aad6ee95a939f5c864a5abf5498b7ed5c51fed508b653287fb5f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing:Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to book titles on the domain loaminoo.linkpc.net. While the URLs themselves are marked as confirmed benign, the sheer volume and the nature of the domain suggest a link farm designed to distribute potentially malicious content or engage in SEO manipulation for malicious purposes. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/2093096097091091/A-Breath-of-Snow-and-Ashes-Outlander-6-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/8094097096098/A-Breath-of-Snow-and-Ashes-Outlander-6-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/4097096092095091/The-Outlander-Series-7-Book-Bundle-Outlander-Dragonfly-in-Amber-Voyager-Drums-of-Autumn-The-Fiery-Cross-A-Breath-of-Snow-and-Ashes-An-Echo-in-the-Bone-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/4099090099090092/Drums-of-Autumn-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/3092094099093/Voyager-Outlander-3-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/2094093094093093/The-Scottish-Prisoner-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/1091092090096090094/Drums-of-Autumn-Outlander-4-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/2090099097096099/Drums-of-Autumn-Outlander-4-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/2096098093093095/Drums-of-Autumn-Outlander-4-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/4097090091090096/The-Fiery-Cross-Outlander-5-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/6094096097091091/Voyager-Outlander-3-part-1-of-2-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/1091092090096090091/Dragonfly-in-Amber-Outlander-2-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/6095094091096/Ecos-do-Futuro-Outlander-7-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/1099092090099093/An-Echo-in-the-Bone-Outlander-7-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/3092096093092/The-Fiery-Cross-Outlander-5-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/9096095098/An-Echo-in-the-Bone-Outlander-7-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/6098094092098/A-Viajante-do-Tempo-Outlander-1-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/1099098097090095/Cross-Stitch-Outlander-1-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/3091094092090091/Written-in-My-Own-Heart-s-Blood-Outlander-8-by-Diana-Gabaldon.pdf
    • http://loaminoo.linkpc.net/2090095094095091/Written-in-My-Own-Heart-s-Blood-Outlander-8-by-Diana-Gabaldon.pdf

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