Malicious PDF — malware analysis report

Static analysis result for SHA-256 889463fb017daccf…

MALICIOUS

PDF

16.4 KB Created: 2020-03-18 22:27:42 +00:00 Authoring application: mPDF 5.7
MD5: fdda07c1646cabbff86c311b5d4dd3db SHA-1: 6c4f1d09d6f5978777b27ce4eb41509d4a8e5f36 SHA-256: 889463fb017daccfe482f044d390921d48a548def7a53246f87df6a480e30c2f
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to a single domain, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs likely serve as a lure to a collection of potentially malicious content, although no direct payload execution was observed within this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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://easckaolp.myhome.cx/2849840842841840/The-Best-of-Robert-E-Howard-Crimson-Shadows-Volume-1-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/4841840847847845/Nameless-Cults-The-Complete-Cthulhu-Mythos-Fiction-of-Robert-E-Howard-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/2849844840843848/Wings-in-the-Night-The-Weird-Works-of-Robert-E-Howard-4-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/1846843846843848/The-Footfalls-Within-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/1848840847848840/Red-Nails-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/3847846844845840/King-Kull-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/3841845849847849/Sword-Woman-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/2848849842844845/Jewels-of-Gwahlur-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/1845847848848844/Conan-Book-1-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/3844849840848844/Conan-the-Barbarian-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/2848849842845840/Rogues-in-the-House-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/4841840840849847/Conan-the-Usurper-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/2848848847845845/The-Phoenix-on-the-Sword-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/3840843846847843/Son-of-the-White-Wolf-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/7849845842844847/Graveyard-Rats-and-Others-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/1848841844843840/Conan-the-Conqueror-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/2843841841841847/Red-Sonya---The-Shadow-of-the-Vulture-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/1845848841847848/Bran-Mak-Morn-The-Last-King-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/1848845846848840/The-Conan-Chronicles-Volume-2-The-Hour-of-the-Dragon-The-Conan-Chronicles-2-by-Robert-E-Howard.pdf
    • http://easckaolp.myhome.cx/2849848846847841/The-Savage-Tales-of-Solomon-Kane-by-Robert-E-Howard.pdf

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