Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a71fa54c132907c…

MALICIOUS

PDF

18.7 KB Created: 2019-04-29 23:00:47 +01:00 Authoring application: mPDF 5.7
MD5: c6da9e612990df3c14a4fb64160f0b76 SHA-1: b1048283b9614b629c0f3aff8926a8cc7863fa63 SHA-256: 8a71fa54c132907c60f8a3cad5d4c32be0573cb05d24776eb938c4395a4e87eb
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a link farm with 25 external links, many of which are to book-related PDFs. This heuristic suggests a tactic to artificially inflate search engine rankings or to distribute content through a large number of indirect links. 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 0.9775

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://zacdsa.linkpc.net/2c53c50c55c53c58/To-Love-What-Is-A-Marriage-Transformed-by-Alix-Kates-Shulman.pdf
    • http://zacdsa.linkpc.net/4c53c54c50c50c51/Max-Shulman-s-Guided-Tour-of-Campus-Humor-by-Max-Shulman.pdf
    • http://zacdsa.linkpc.net/6c52c58c59c58c52/Marriage-a-History-How-Love-Conquered-Marriage-by-Stephanie-Coontz.pdf
    • http://zacdsa.linkpc.net/6c59c52c58c51c51/What-If-It-s-Love-La-Boh-me-2-by-Alix-Nichols.pdf
    • http://zacdsa.linkpc.net/2c57c51c52c51c58/What-If-It-s-Love-La-Boh-me-2-by-Alix-Nichols.pdf
    • http://zacdsa.linkpc.net/5c50c52c55c51c51/Love-Your-Husband-Love-Yourself-Embracing-God-s-Purpose-for-Passion-in-Marriage-by-Jennifer-Flanders.pdf
    • http://zacdsa.linkpc.net/6c57c52c51c52/Love-Marriage-by-V-V-Ganeshananthan.pdf
    • http://zacdsa.linkpc.net/3c55c53c53c54c52/Love-Marriage-and-a-Baby-Carriage-by-C-S-Poe.pdf
    • http://zacdsa.linkpc.net/5c50c54c59c51c51/Love-After-Marriage-Forever-After-2-by-Mia-Kayla.pdf
    • http://zacdsa.linkpc.net/1c54c52c57c57c58/The-Commitment-Love-Sex-Marriage-and-My-Family-by-Dan-Savage.pdf
    • http://zacdsa.linkpc.net/6c51c51c58c52c52/The-Act-of-Marriage-The-Beauty-of-Sexual-Love-by-Tim-LaHaye.pdf
    • http://zacdsa.linkpc.net/3c56c57c54c59c52/The-Wells-Bequest-by-Polly-Shulman.pdf
    • http://zacdsa.linkpc.net/4c50c58c57c53c55/The-Grimm-Legacy-by-Polly-Shulman.pdf
    • http://zacdsa.linkpc.net/1c56c52c55c58c55/Journey-of-Hope-Love-Marriage-and-Overcoming-Infertility-at-40-by-Fitts-Ed-D.pdf
    • http://zacdsa.linkpc.net/4c59c52c59c55c50/The-Marriage-Code-Discovering-Your-Own-Secret-Language-of-Love-by-Bill-Farrel.pdf
    • http://zacdsa.linkpc.net/6c56c51c53c59c58/L-exp-dition-H-G-Wells-Divers-Litt-rature-12-ans-et-by-Polly-Shulman.pdf
    • http://zacdsa.linkpc.net/1c50c58c59c55c52c59/Julius-Shulman-Modernism-Rediscovered-by-Pierluigi-Serraino.pdf
    • http://zacdsa.linkpc.net/2c53c57c58c53c51/One-Hundred-Names-for-Love-A-Stroke-a-Marriage-and-the-Language-of-Healing-by-Diane-Ackerman.pdf
    • http://zacdsa.linkpc.net/2c52c51c50c58c59/Spousonomics-Using-Economics-to-Master-Love-Marriage-and-Dirty-Dishes-by-Paula-Szuchman.pdf
    • http://zacdsa.linkpc.net/1c57c58c56c53/Mastering-Marriage-For-Every-Couple-Who-Wants-to-Grow-Happier-and-More-in-Love-Each-Year-by-Charlie-Michaels.pdf
    • http://zacdsa.linkpc.net/6c51c51c58

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