Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcafe76e8cbf7a6b…

MALICIOUS

PDF

44.5 KB Created: 2018-11-22 08:02:38 +03:00 Authoring application: AH XSL Formatter V6.1 MR5a for Windows (x64) : 6.1.10.15867 (via Antenna House PDF Output Library 6.1.472 (Windows (x64)))
MD5: 3145a0711c317162e995073435c6ce39 SHA-1: 990bc5fa82bd8dbd41d47e47465316bc3268ee64 SHA-256: fcafe76e8cbf7a6b5c95842044a6f190c7dfff7bfd401f512e5d1b8c5fdc22d1
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links pointing to external PDF documents on the domain 'gorillawalker.com'. This behavior is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact payload or user interaction intended beyond visiting the linked URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9007

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/the-daltons-in-the-blizzard-lucky-luke-15-lucky-luke.pdf
    • http://www.gorillawalker.com/flory-a-miraculous-story-of-survival-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/the-telegraph-all-new-big-book-of-cryptic-crosswords-2.pdf
    • http://www.gorillawalker.com/by-paul-tingay-seychelles-travel-pack-globetrotter-travel-packs-fifth.pdf
    • http://www.gorillawalker.com/strength-training-for-soccer.pdf
    • http://www.gorillawalker.com/benedictus-from-the-armed-man-a-mass-for-peace-contemporary.pdf
    • http://www.gorillawalker.com/chronic-hepatitis-b-how-i-cured-myself.pdf
    • http://www.gorillawalker.com/the-macmillan-and-silk-cut-nautical-almanac-1993.pdf
    • http://www.gorillawalker.com/solving-the-puzzle-of-irr-equation-choosing-the-right-solution.pdf
    • http://www.gorillawalker.com/getting-worked-up-sapphire-falls-book-two-volume-2.pdf
    • http://www.gorillawalker.com/the-athenian-option-radical-reform-for-the-house-of-lords.pdf
    • http://www.gorillawalker.com/the-pku-paradox-a-short-history-of-a-genetic-disease.pdf
    • http://www.gorillawalker.com/seo-out-rank-google-panda-penguin-rank-like-a-pro.pdf
    • http://www.gorillawalker.com/butterworths-hong-kong-bankruptcy-law-handbook-4th-edition.pdf
    • http://www.gorillawalker.com/the-deep-end-of-south-park-critical-essays-on-television.pdf
    • http://www.gorillawalker.com/weedwhacker-episode-2-kindle-edition.pdf
    • http://www.gorillawalker.com/when-hens-begin-to-crow-gender-and-parliamentary-politics-in.pdf
    • http://www.gorillawalker.com/ulcer-research-12th-international-conference-icur-and-gi-satellite-of.pdf
    • http://www.gorillawalker.com/foreign-gods-inc.pdf
    • http://www.gorillawalker.com/peshawar-city-on-the-frontier-oxford-in-asia-historical-reprints.pdf
    • http://www.gorillawalker.com/a-p-technician-airframe-textbook.pdf
    • http://www.gorillawalker.com/captain-cook-s-voyages-1768-1779.pdf
    • http://www.gorillawalker.com/earthly-powers.pdf
    • http://www.gorillawalker.com/autocad-and-its-applications-2013.pdf
    • http://www.gorillawalker.com/calculo-una-variable-spanish-edition.pdf
    • http://www.gorillawalker.com/immunity-primers-in-biology.pdf
    • http://www.gorillawalker.com/binzel-abico-en-60-974-7-mig-mag-welding-torch.pdf
    • http://www.gorillawalker.com/dentists-an-endangered-species-a-survival-guide-for-fee-for.pdf
    • http://www.gorillawalker.com/stan-kenton-the-early-years-1941-1947.pdf
    • http://www.gorillawalker.com/sample-preparation-of-pharmaceutical-dosage-forms-challenges-and-strategies-for.pdf
    • http://www.gorillawalker.com/creating-ourselves-african-americans-and-hispanic-americans-on-popular-culture.pdf
    • http://www.gorillawalker.com/system-and-structure-essays-in-communication-and-exchange-second-edition.pdf
    • http://www.gorillawalker.com/home-made-sweets-bon-bons-candies-and-toffees.pdf
    • http://www.gorillawalker.com/ancient-board-games-and-solitaire-games-from-around-the-world.pdf
    • http://www.gorillawalker.com/mixed-marriage-global-viewpoints.pdf
    • http://www.gorillawalker.com/the-story-of-the-milky-way-a-cherokee-tale.pdf
    • http://www.gorillawalker.com/biochemistry-of-the-eye-2nd-edition.pdf
    • http://www.gorillawalker.com/inside-out-prayers-for-young-women.pdf
    • http://www.gorillawalker.com/nuclear-biological-and-chemical-warfare.pdf
    • http://www.gorillawalker.com/total-quality-key-terms-and-concepts.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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