Malicious PDF — malware analysis report

Static analysis result for SHA-256 8810be02c3a3c7c7…

MALICIOUS

PDF

17.7 KB Created: 2019-04-30 08:16:37 +01:00 Authoring application: mPDF 5.7
MD5: d9f79d93fc6b8c6ded0d5ae93b8b44df SHA-1: 7e9ca5b07d49a27b8ff0ccfd327bebbd4559fb7d SHA-256: 8810be02c3a3c7c7aeffd65f58d31636804d04fcc6308196bf445a68f2b6b95f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm. This is indicative of a SEO poisoning or phishing campaign, where the goal is to drive traffic to external sites. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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://muicuiu.dumb1.com/2a05a04a07a00a08/The-Generals-Ulysses-S-Grant-amp-Robert-E-Lee-by-Nancy-Scott-Anderson.pdf
    • http://muicuiu.dumb1.com/6a01a05a06a06a01/The-Personal-Memoirs-of-Julia-Dent-Grant-Mrs-Ulysses-S-Grant-by-John-Y-Simon.pdf
    • http://muicuiu.dumb1.com/6a04a07a00a03a09/Ulysses-Annotated-Notes-for-James-Joyce-s-Ulysses-by-Robert-J-Seidman.pdf
    • http://muicuiu.dumb1.com/2a05a04a01a07a01/Personal-Memoirs-by-Ulysses-S-Grant.pdf
    • http://muicuiu.dumb1.com/2a05a04a04a05a06/Personal-Memoirs-Vol-2-by-Ulysses-S-Grant.pdf
    • http://muicuiu.dumb1.com/1a06a01a09a03a05/Personal-Memoirs-by-Ulysses-S-Grant.pdf
    • http://muicuiu.dumb1.com/2a05a05a07a04a05/The-Generalship-of-Ulysses-S-Grant-by-J-F-C-Fuller.pdf
    • http://muicuiu.dumb1.com/3a06a08a01a09a04/Ulysses-S-Grant-by-Josiah-Bunting.pdf
    • http://muicuiu.dumb1.com/2a05a04a06a09a01/Ulysses-S-Grant-The-Unlikely-Hero-by-Michael-Korda.pdf
    • http://muicuiu.dumb1.com/2a05a04a08a04a02/General-Ulysses-S-Grant-The-Soldier-and-the-Man-by-Edward-G-Longacre.pdf
    • http://muicuiu.dumb1.com/2a05a04a08a04a09/Ulysses-S-Grant-Triumph-over-Adversity-1822-1865-by-Zenith-Press.pdf
    • http://muicuiu.dumb1.com/1a03a08a01a08a05/The-Mask-of-Command-Alexander-the-Great-Wellington-Ulysses-S-Grant-Hitler-and-the-Nature-of-Leadership-by-John-Keegan.pdf
    • http://muicuiu.dumb1.com/3a03a05a00a05a04/Judge-Anderson-Childhood-s-End-by-Alan-Grant.pdf
    • http://muicuiu.dumb1.com/4a04a02a09a06a05/Judge-Anderson-The-Psychic-Crime-Files-by-Alan-Grant.pdf
    • http://muicuiu.dumb1.com/8a06a00a06a01a05/Classroom-Discussions-Seeing-Math-Discourse-in-Action-Grades-K-6-by-Nancy-Canavan-Anderson.pdf
    • http://muicuiu.dumb1.com/2a02a02a03a08a08/U-S-Grant-The-Civil-War-Years-Grant-Moves-South-and-Grant-Takes-Command-by-Bruce-Catton.pdf
    • http://muicuiu.dumb1.com/1a07a02a03/Dreamland-by-Robert-L-Anderson.pdf
    • http://muicuiu.dumb1.com/6a06a06a00a03a04/Paul-Gauguin-by-Robert--Anderson.pdf
    • http://muicuiu.dumb1.com/4a05a04a07a02a01/You-Know-I-Can-t-Hear-You-When-the-Water-s-Running-by-Robert-Woodruff-Anderson.pdf
    • http://muicuiu.dumb1.com/2a01a05a00a09a02/Like-Father-Like-Son-by-Robert-Scott.pdf
    • http://muicuiu.dumb1.com/1a03a08a01a08a05/The-Mask-of-Command-Alexander-the-Great-Wellington-Ulysses-S-Grant-Hitler-and-the-Na

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