Malicious PDF — malware analysis report

Static analysis result for SHA-256 08c9ec7b6cad21a9…

MALICIOUS

PDF

32.3 KB Created: 2019-12-14 04:08:41 +03:00 Authoring application: Sejda (Ver. 1.0.0.M6-SNAPSHOT) (via iText 2.1.7 by 1T3XT)
MD5: a25ffc4faa4ccbaf2005277d4bd5f221 SHA-1: 4443370b5ff15ad5e4f1b0dca92a92ffeb44a179 SHA-256: 08c9ec7b6cad21a99a4288571af2b36ceb2b23e9df727dd93abeaf63dd281f5a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a heuristic firing for a large number of external links, suggesting a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's prediction indicate malicious intent. The document body, though heavily obfuscated, contains URL fragments that align with the link farm heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

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://www.gorillawalker.com/euthanasia-a-reference-handbook-contemporary-world-issues.pdf
    • http://www.gorillawalker.com/ecce-homo-how-one-becomes-what-one-is-oxford-world.pdf
    • http://www.gorillawalker.com/ferenczi-and-beyond-exile-of-the-budapest-school-and-solidarity.pdf
    • http://www.gorillawalker.com/the-chemical-warfare-service-from-laboratory-to-field.pdf
    • http://www.gorillawalker.com/alien-dreams.pdf
    • http://www.gorillawalker.com/nelson-s-band-of-brothers-lives-and-memorials.pdf
    • http://www.gorillawalker.com/quelques-heures-pour-s-aimer-azur-french-edition.pdf
    • http://www.gorillawalker.com/test-driven-development-by-example.pdf
    • http://www.gorillawalker.com/the-urban-poems.pdf
    • http://www.gorillawalker.com/designing-embedded-hardware-kindle-edition.pdf
    • http://www.gorillawalker.com/in-der-judenstadt-erz-hlung-german-edition.pdf
    • http://www.gorillawalker.com/the-lost-kitten-kindle-edition.pdf
    • http://www.gorillawalker.com/missing-money-in-cyprus-what-can-happen-in-a-regulatory.pdf
    • http://www.gorillawalker.com/the-certified-six-sigma-black-belt-handbook-second-edition.pdf
    • http://www.gorillawalker.com/the-hunt-for-the-tree-of-life-book-two-2.pdf
    • http://www.gorillawalker.com/mythology-an-illustrated-encyclopedia.pdf
    • http://www.gorillawalker.com/story-behind-the-protest-song-a-reference-guide-to-the.pdf
    • http://www.gorillawalker.com/6-weeks-to-superhealth-an-easy-to-follow-programme-for.pdf
    • http://www.gorillawalker.com/bad-son-rising.pdf
    • http://www.gorillawalker.com/black-butterfly-a-secret-service-thriller.pdf
    • http://www.gorillawalker.com/klimt-s-landscapes-cl52057.pdf
    • http://www.gorillawalker.com/cardiac-catheterization-angiography-and-intervention-fourth-edition.pdf
    • http://www.gorillawalker.com/easy-gymnastics-disease-you-to-take-a-pain-cure-all.pdf
    • http://www.gorillawalker.com/persia-revisited-1895.pdf
    • http://www.gorillawalker.com/basics-plus-studies-for-1-or-2-brass-instruments.pdf
    • http://www.gorillawalker.com/snowboarding-for-fun-for-fun-sports-series.pdf
    • http://www.gorillawalker.com/narcissistic-personality-disorders-distancing-from-narcissism.pdf
    • http://www.gorillawalker.com/memory-and-conflict-in-lebanon-remembering-and-forgetting-the-past.pdf
    • http://www.gorillawalker.com/rationality-and-the-reflective-mind.pdf
    • http://www.gorillawalker.com/an-early-roman-fort-and-urban-development-on-londinium-s.pdf
    • http://www.gorillawalker.com/he-saved-me-he-found-me-volume-2.pdf
    • http://www.gorillawalker.com/the-unfinished-transition-to-democracy-in-latin-america-latin-american.pdf
    • http://www.gorillawalker.com/fundamentals-of-inhomogeneous-fluids.pdf
    • http://www.gorillawalker.com/canonical-quantum-gravity-fundamentals-and-recent-developments.pdf
    • http://www.gorillawalker.com/the-babylonian-legends-of-the-creation-and-the-fight-between.pdf
    • http://www.gorillawalker.com/kid-s-guide-to-san-francisco-kid-s-guides-series.pdf
    • http://www.gorillawalker.com/vintage-valve-radios-a-practical-guide-for-restorers.pdf
    • http://www.gorillawalker.com/taking-sides-clashing-views-in-energy-and-society.pdf
    • http://www.gorillawalker.com/wanted-addicted-trilogy-book-3.pdf
    • http://www.gorillawalker.com/planning-a-non-traditional-wedding-teach-yourself.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://www.aiim.org/pdfa/ns/extension/
    • http://www.aiim.org/pdfa/ns/schema#
    • http://www.aiim.org/pdfa/ns/property#
    • http://www.aiim.org/pdfa/ns/id/

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