Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e61832f52e4b594…

MALICIOUS

PDF

35.3 KB Created: 2020-02-08 18:25:30 +03:00 Authoring application: Microsoft Word: LaserWriter 8 8.6.5 (via Acrobat Distiller 4.0 for Macintosh)
MD5: a6328662c59e79cea37e49ec7cfaa003 SHA-1: 2e969c5bf1371920eadd26cfb7c5e14587a00901 SHA-256: 1e61832f52e4b594f33c811bbe788683a6001da77ca3a5f2ad6843090b5e47e2
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The primary attack pattern appears to be a link farm designed to manipulate search engine results or distribute malicious content via numerous PDF links. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8018

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/essence-of-buddhism-an-introduction-to-its-philosophy-and-practice.pdf
    • http://www.gorillawalker.com/southern-africa-revealed-botswana-mozambique-namibia-south-africa-and-zimbabwe.pdf
    • http://www.gorillawalker.com/the-triumph-of-anti-art-conceptual-and-performance-art-in.pdf
    • http://www.gorillawalker.com/keep-calm-i-m-the-administrative-assistant-ultimate-assistant-journal.pdf
    • http://www.gorillawalker.com/bull-run-to-bull-run-or-four-years-in-the.pdf
    • http://www.gorillawalker.com/genetically-modified-athletes-biomedical-ethics-gene-doping-and-sport-ethics.pdf
    • http://www.gorillawalker.com/call-of-duty-black-ops-ii-limited-edition-strategy-guide.pdf
    • http://www.gorillawalker.com/shopping-for-good-boston-review-books.pdf
    • http://www.gorillawalker.com/the-drug-user-documents-1840-1960.pdf
    • http://www.gorillawalker.com/a-hard-summation.pdf
    • http://www.gorillawalker.com/springtime-of-the-liturgy-classics-in-liturgy.pdf
    • http://www.gorillawalker.com/captain-awesome-3-pack-captain-awesome-to-the-rescue-captain.pdf
    • http://www.gorillawalker.com/designing-judicial-review-interest-groups-congress-and-communications-policy.pdf
    • http://www.gorillawalker.com/ya-es-adolescente-already-teenager-una-gu-a-para-padres.pdf
    • http://www.gorillawalker.com/tannh-user-wwv-70-act-ii-einleitung-und-sc-1.pdf
    • http://www.gorillawalker.com/strategies-and-patterns-for-ear-training.pdf
    • http://www.gorillawalker.com/toys-everyday-science-level-1-amicus-readers.pdf
    • http://www.gorillawalker.com/busy-airport-busy-books.pdf
    • http://www.gorillawalker.com/the-vanishing-girl-audiobook-mp3-audio-unabridged-mp3-cd.pdf
    • http://www.gorillawalker.com/el-examen-pmp-como-aprobarlo-en-el-primer-intento-spanish.pdf
    • http://www.gorillawalker.com/amy-winehouse-r-b-jazz-soul-musician-lives-cut-short.pdf
    • http://www.gorillawalker.com/the-fixer-managing-in-the-middle-practical-rules-ideas-and.pdf
    • http://www.gorillawalker.com/rock-climbing-kid-s-guides-to-the-outdoors.pdf
    • http://www.gorillawalker.com/the-role-of-central-banks-in-financial-stability-how-has.pdf
    • http://www.gorillawalker.com/expounding-the-constitution-essays-in-constitutional-theory.pdf
    • http://www.gorillawalker.com/dick-vitale-s-fabulous-50-players-moments-in-college-basketball.pdf
    • http://www.gorillawalker.com/grandpa-makes-a-cake-that-boy-trog-again.pdf
    • http://www.gorillawalker.com/endangered-species-a-portfolio-of-six-works.pdf
    • http://www.gorillawalker.com/big-time-the-legendary-style-of-m-nner-vogue-1984.pdf
    • http://www.gorillawalker.com/laws-of-emotion.pdf
    • http://www.gorillawalker.com/don-t-call-me-sweet.pdf
    • http://www.gorillawalker.com/quantitative-analysis.pdf
    • http://www.gorillawalker.com/dark-lover-masters-of-time-book-5.pdf
    • http://www.gorillawalker.com/partners-or-rivals-power-and-latino-black-and-white-relations.pdf
    • http://www.gorillawalker.com/feather-river-country-adventure-trails-101-fun-hikes-within-the.pdf
    • http://www.gorillawalker.com/military-law-and-precedent-international-military-law-history-series.pdf
    • http://www.gorillawalker.com/the-nepa-reference-guide.pdf
    • http://www.gorillawalker.com/st-lydwine-of-schiedam.pdf
    • http://www.gorillawalker.com/bolos-ii-the-unconquerable-bk-2.pdf
    • http://www.gorillawalker.com/how-to-trade-commodities-simple-strategies-for-gold-and-crude.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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