Malicious PDF — malware analysis report

Static analysis result for SHA-256 462bd9795c644049…

MALICIOUS

PDF

42.1 KB Created: 2018-12-02 10:56:01 +03:00 Authoring application: Adobe InDesign CS5 (7.0) (via Adobe PDF Library 9.9)
MD5: 3c8e726edf1bf6d99a49e43a4de2ee4a SHA-1: 3bb5fe9068ac5bbb58659a6f4f54f645b81aaf0c SHA-256: 462bd9795c6440492fe8768f1845ed5e07eb013460ba7f6af6871f42a2ce7c4e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier as malicious. A critical heuristic identified a large number of embedded external links, suggesting a link farm or SEO manipulation tactic. The document body contains obfuscated content, but the primary malicious activity appears to be the mass distribution of links to other PDF files hosted on the same domain, likely for SEO poisoning or to serve as a lure for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8698

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/tracing-the-stars-corwint-central-agent-files-book-3-kindle.pdf
    • http://www.gorillawalker.com/breast-cancer-an-issue-of-hematology-oncology-clinics-of-north.pdf
    • http://www.gorillawalker.com/gurps-creatures-of-the-night.pdf
    • http://www.gorillawalker.com/manual-del-instalador-electricista-manual-of-electrician-installer-spanish-edition.pdf
    • http://www.gorillawalker.com/a-wicked-chill-away-from-whipplethorn-book-4-kindle-edition.pdf
    • http://www.gorillawalker.com/the-handbook-of-eyewitness-psychology-volume-i-memory-for-events.pdf
    • http://www.gorillawalker.com/a-graphical-approach-to-college-algebra-trigonometry-graphing.pdf
    • http://www.gorillawalker.com/summer-and-the-sissy-kindle-edition.pdf
    • http://www.gorillawalker.com/the-7-universal-laws-of-customer-value-how-to-win.pdf
    • http://www.gorillawalker.com/a-song-called-youth.pdf
    • http://www.gorillawalker.com/electronic-music-and-midi-projects.pdf
    • http://www.gorillawalker.com/international-exploration-economics-risk-and-contract-analysis.pdf
    • http://www.gorillawalker.com/basic-math-skills-grade-2.pdf
    • http://www.gorillawalker.com/300-different-handstyles-by-egido-val.pdf
    • http://www.gorillawalker.com/biosimilars-design-and-analysis-of-follow-on-biologics-chapman-hall.pdf
    • http://www.gorillawalker.com/automotive-control-systems.pdf
    • http://www.gorillawalker.com/cooking-the-fat-free-salt-free-sugar-free-flavor-full.pdf
    • http://www.gorillawalker.com/piano-trio-op97-b-flat-major-archduke-erzherzog-study-score.pdf
    • http://www.gorillawalker.com/angels-over-me-memoir.pdf
    • http://www.gorillawalker.com/optoelectronics-and-image-sensor-data-book-1987-soyd002.pdf
    • http://www.gorillawalker.com/spiderwebs-and-silk-tracing-evolution-from-molecules-to-genes-to.pdf
    • http://www.gorillawalker.com/miss-dd-vol-4-the-prince-of-manga-part-1.pdf
    • http://www.gorillawalker.com/zombie-virus-three-zombie-short-stories.pdf
    • http://www.gorillawalker.com/many-bloody-returns.pdf
    • http://www.gorillawalker.com/autobiografia-del-general-jose-antonio-paez-spanish-edition.pdf
    • http://www.gorillawalker.com/paula-y-su-cabello-multicolor-cuento-ilustrado-para-so-adores.pdf
    • http://www.gorillawalker.com/psychological-considerations-teaching-english-to-deaf-students-and-english-as.pdf
    • http://www.gorillawalker.com/average-is-over-powering-america-beyond-the-age-of-the.pdf
    • http://www.gorillawalker.com/the-translucent-revolution-how-people-just-like-you-are-waking.pdf
    • http://www.gorillawalker.com/sources-in-the-history-of-medicine-the-impact-of-disease.pdf
    • http://www.gorillawalker.com/desde-el-infierno-ii-el-esperado-desenlace-del-libro-adaptado.pdf
    • http://www.gorillawalker.com/those-about-to-die-ballatine-books-f765.pdf
    • http://www.gorillawalker.com/oasis-for-easy-guitar-tab.pdf
    • http://www.gorillawalker.com/black-rhythms-of-peru-reviving-african-musical-heritage-in-the.pdf
    • http://www.gorillawalker.com/government-and-politics-of-texas.pdf
    • http://www.gorillawalker.com/maria-madre-de-dios-en-la-fe-y-en-la.pdf
    • http://www.gorillawalker.com/shadowrise-volume-three-of-shadowmarch.pdf
    • http://www.gorillawalker.com/the-gingerbread-boy-dragonfly-edition.pdf
    • http://www.gorillawalker.com/servsafe-coursebook-second-edition.pdf
    • http://www.gorillawalker.com/consolidation-of-mobags-the-quest-for-efficiency-in-logistics-operations.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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