Malicious PDF — malware analysis report

Static analysis result for SHA-256 c416dc7368aa1958…

MALICIOUS

PDF

42.1 KB Created: 2018-11-21 20:52:43 +03:00 Authoring application: Acrobat Distiller 7.0.5 (Windows)
MD5: c3e6ca48d3d4e15d970a7b58676622a1 SHA-1: 457ed1c58b57a066db228151a46312e116d8c26f SHA-256: c416dc7368aa19588de6234d73f480ec183f53c1ad0b0d70e34c7917fef28c96
150 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Dropper.Agent and a machine learning classifier indicated a high probability of maliciousness. The primary heuristic identified a large number of external PDF links, all hosted on 'www.gorillawalker.com'. The document body contains numerous embedded URLs pointing to various PDF files on this domain, suggesting a link farm or a distribution mechanism for further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9027

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7300472-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7300472-0
  • 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/desecration-antichrist-takes-the-throne-left-behind-book-9.pdf
    • http://www.gorillawalker.com/applied-parallel-and-scientific-computing-10th-international-conference-para-2010.pdf
    • http://www.gorillawalker.com/saint-john-s-bible-note-cards-psalms.pdf
    • http://www.gorillawalker.com/mood-disorders-a-practical-guide-practical-guides-in-psychiatry.pdf
    • http://www.gorillawalker.com/raymond-loewy-design-heroes-series.pdf
    • http://www.gorillawalker.com/the-voice-of-the-body.pdf
    • http://www.gorillawalker.com/the-icarus-parallel.pdf
    • http://www.gorillawalker.com/roberto-burle-marx-the-modernity-of-landscape.pdf
    • http://www.gorillawalker.com/key-concepts-in-leadership-sage-key-concepts-series.pdf
    • http://www.gorillawalker.com/miyazaki-s-spirited-away-picture-book.pdf
    • http://www.gorillawalker.com/training-circular-tc-3-97-61-fm-3-97-61.pdf
    • http://www.gorillawalker.com/wines-of-walla-walla-valley-a-deep-rooted-history-american.pdf
    • http://www.gorillawalker.com/the-mind-behind-the-musical-ear-how-children-develop-musical.pdf
    • http://www.gorillawalker.com/feeding-pigs-in-the-tropics-fao-animal-production-health-paper.pdf
    • http://www.gorillawalker.com/rosanna-of-the-amish.pdf
    • http://www.gorillawalker.com/the-lightning-prophecy-the-lightning-witch-trilogy-book-1.pdf
    • http://www.gorillawalker.com/the-lost-tomb.pdf
    • http://www.gorillawalker.com/the-21st-century-lifeskills-handbook-community-resources-the-21st-century.pdf
    • http://www.gorillawalker.com/local-couples-join-marriage-suit-courts-the-aclu-is-leading.pdf
    • http://www.gorillawalker.com/the-why-axis-hidden-motives-and-the-undiscovered-economics-of.pdf
    • http://www.gorillawalker.com/mad-at-school-rhetorics-of-mental-disability-and-academic-life.pdf
    • http://www.gorillawalker.com/crystal-zodiac.pdf
    • http://www.gorillawalker.com/a-summary-of-law-school-for-exams-law-school-e.pdf
    • http://www.gorillawalker.com/hog-s-head-conversations-essays-on-harry-potter-volume-1.pdf
    • http://www.gorillawalker.com/love-sex-death-and-the-meaning-of-life-the-films.pdf
    • http://www.gorillawalker.com/the-little-nugget.pdf
    • http://www.gorillawalker.com/friend-of-new-practical-books-housewife-high-blood-pressure-to.pdf
    • http://www.gorillawalker.com/brokerage-fraud.pdf
    • http://www.gorillawalker.com/kiss-in-the-dark-scarlett-wakefield-series.pdf
    • http://www.gorillawalker.com/deutsch-rechtschreibung-gleich-und.pdf
    • http://www.gorillawalker.com/planet-blood-volume-1.pdf
    • http://www.gorillawalker.com/cal-99-wild-scenic-minnesota.pdf
    • http://www.gorillawalker.com/the-sentinels-of-andersonville.pdf
    • http://www.gorillawalker.com/crochet-basics-how-to-read-crochet-patterns-30-easy-steps.pdf
    • http://www.gorillawalker.com/the-sword-in-the-stone-disney-little-golden-book.pdf
    • http://www.gorillawalker.com/in-the-beginning.pdf
    • http://www.gorillawalker.com/algebra-2-long-term-projects.pdf
    • http://www.gorillawalker.com/biomembranen-physikalische-prinzipien-der-selbstorganisation-und-funktion-als-integrierte-systeme.pdf
    • http://www.gorillawalker.com/supreme-court-and-appellate-advocacy-practition-treatise-series.pdf
    • http://www.gorillawalker.com/the-lost-daughter.pdf
    • http://www.gorillawalk
    • 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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