Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5dfe1e7096fb682…

MALICIOUS

PDF

43.0 KB Created: 2018-12-03 17:11:45 +03:00 Authoring application: FineReader (via -)
MD5: 931b3b34d5739c3b9e1580d00881960a SHA-1: 85fb164c0c5fa4ea2cc18ae9738119d0dc9f2a32 SHA-256: a5dfe1e7096fb682913500f33ab30ec8551d1f0ed26109b12d7b21eb985798ff
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a heuristic indicating a large number of external links. The document body is heavily obfuscated, but the presence of 50 embedded URLs, many of which are structured as SEO-optimized links to PDF files, strongly suggests a link farm or redirection scheme. The primary attack pattern is likely to lure users into clicking these links, leading to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/jorge-luis-borges-sources-and-illumination.pdf
    • http://www.gorillawalker.com/understanding-the-dead-sea-scrolls.pdf
    • http://www.gorillawalker.com/chemical-properties-handbook-physical-thermodynamics-engironmental-transport-safety-health-related.pdf
    • http://www.gorillawalker.com/the-one-year-every-day-devotions.pdf
    • http://www.gorillawalker.com/violin-concerto-violin-and-piano-reduction-william-walton-edition.pdf
    • http://www.gorillawalker.com/theorems-corollaries-lemmas-and-methods-of-proof.pdf
    • http://www.gorillawalker.com/essential-vocabulary-for-the-college-bound-students.pdf
    • http://www.gorillawalker.com/sister-sarah-s-pick-3-sums-historical-follow-ups-charts.pdf
    • http://www.gorillawalker.com/handout.pdf
    • http://www.gorillawalker.com/the-master-chef-guide-to-making-brownies.pdf
    • http://www.gorillawalker.com/marketing-engineering-computer-assisted-marketing-analysis-and-planning-2nd-edition.pdf
    • http://www.gorillawalker.com/mosbys-textbook-for-nursing-assistants-text-only-5th-edition.pdf
    • http://www.gorillawalker.com/good-steward-newsletter-march-2005-kindle-edition.pdf
    • http://www.gorillawalker.com/la-mujer-el-sida-y-el-activismo-the-spanish-edition.pdf
    • http://www.gorillawalker.com/herodotus-the-histories-penguin-classics.pdf
    • http://www.gorillawalker.com/beautiful-loot-the-soviet-plunder-of-europe-s-art-treasures.pdf
    • http://www.gorillawalker.com/the-divine-liturgy-for-choir-and-laity.pdf
    • http://www.gorillawalker.com/the-bangladesh-travel-journal.pdf
    • http://www.gorillawalker.com/charles-goldie-new-zealand-paintings-maori-tribe-kindle-edition.pdf
    • http://www.gorillawalker.com/monologues-for-teens.pdf
    • http://www.gorillawalker.com/hotwife-whored-out-mf-mfm-cuckold-made-to-watch-double.pdf
    • http://www.gorillawalker.com/response-to-occupational-health-hazards-a-historical-perspective.pdf
    • http://www.gorillawalker.com/modern-mallet-method-bk-1.pdf
    • http://www.gorillawalker.com/greek-and-roman-mythology-greek-and-roman-mythology-vol-1.pdf
    • http://www.gorillawalker.com/the-unreal-and-the-real-selected-stories-of-ursula-k.pdf
    • http://www.gorillawalker.com/unterwegs-afghanistan-indien-ceylon-kuweit-eine-reise-german-edition-kindle.pdf
    • http://www.gorillawalker.com/dolmarehn-otherworld-trilogy-book-two.pdf
    • http://www.gorillawalker.com/invest-yourself-the-catalogue-of-volunteer-opportunities-a-guide-to.pdf
    • http://www.gorillawalker.com/rakastava-op14-the-lover-satb-divisi-a-cappella-finnish-chorus.pdf
    • http://www.gorillawalker.com/the-telegraph-all-new-big-book-of-cryptic-crosswords-1.pdf
    • http://www.gorillawalker.com/a-brief-history-of-dover-castle-or-a-description-of.pdf
    • http://www.gorillawalker.com/send-for-the-saint-the-saint-series.pdf
    • http://www.gorillawalker.com/atlas-of-micronesia.pdf
    • http://www.gorillawalker.com/real-estate-agent-s-field-guide-the-essential-insider-advice.pdf
    • http://www.gorillawalker.com/starburst-color-photography-in-america-1970-1980.pdf
    • http://www.gorillawalker.com/rand-mcnally-easy-to-fold-maine-laminated-easyfinder-maps.pdf
    • http://www.gorillawalker.com/alpha-male-2.pdf
    • http://www.gorillawalker.com/hungarian-problem-book-iii-based-on-the-e-tvos-competitions.pdf
    • http://www.gorillawalker.com/thomas-kinkade-plein-air-2012-wall-calendar.pdf
    • http://www.gorillawalker.com/van-gogh-face-to-face-the-portraits.pdf
    • http://www.gorillawalker.com/chemical-properties-handbook-
    • 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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