Malicious PDF — malware analysis report

Static analysis result for SHA-256 45cbe94a5c3e8f07…

MALICIOUS

PDF

36.5 KB Created: 2020-02-20 09:30:21 +03:00 Authoring application: Arbortext Publishing Engine (via PDFlib+PDI 8.0.2p1 (Win32))
MD5: 81484baced7af47f93289e9a71c3d9c5 SHA-1: 9b18abcd96f370cf5c418c9af7dd7bd5e040ee5a SHA-256: 45cbe94a5c3e8f0708d01fc8099b35b574fd7c92b24921ce04dee0f60f991a7f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF files, identified by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to manipulate search engine results or to distribute a large volume of content, potentially malicious. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of the file. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific intent beyond link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8196

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/atlas-of-oral-surgery.pdf
    • http://www.gorillawalker.com/if-it-s-not-forever-it-s-not-love.pdf
    • http://www.gorillawalker.com/elizabeth-inchbald-and-her-circle-the-life-story-of-a.pdf
    • http://www.gorillawalker.com/complete-guide-to-cocktails-and-drinks-how-to-create-fantastic.pdf
    • http://www.gorillawalker.com/art-in-theory-1648-1815-an-anthology-of-changing-ideas.pdf
    • http://www.gorillawalker.com/wind-effects-on-structures-an-introduction-to-wind-engineering.pdf
    • http://www.gorillawalker.com/psicologia-del-recuerdo-spanish-edition.pdf
    • http://www.gorillawalker.com/pintupi-country-pintupi-self-sentiment-place-and-politics-among-western.pdf
    • http://www.gorillawalker.com/the-south-sea-adventure-through-japan-s-equatorial-empire.pdf
    • http://www.gorillawalker.com/the-book-of-gad-the-seer-french-translation-french-edition.pdf
    • http://www.gorillawalker.com/the-new-dynamics-of-growth-and-change-in-asia.pdf
    • http://www.gorillawalker.com/planning-control-using-primavera-p6-version-7-for-all-industries.pdf
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    • http://www.gorillawalker.com/advanced-ecg-boards-and-beyond-2e.pdf
    • http://www.gorillawalker.com/a-c-t-english-explained-the-a-c-t-explained.pdf
    • http://www.gorillawalker.com/the-1927-1938-italian-archaeological-expedition-to-transjordan-in-renato.pdf
    • http://www.gorillawalker.com/zhong-biao.pdf
    • http://www.gorillawalker.com/vertebrate-social-organization-benchmark-papers-in-animal-behavior-8.pdf
    • http://www.gorillawalker.com/1-leadership-and-management-for-nursing-practice-2-pharmacology-for.pdf
    • http://www.gorillawalker.com/how-to-boil-an-egg-egg-recipes-for-breakfast-dinner.pdf
    • http://www.gorillawalker.com/nothing-but-the-clouds-unchanged-artists-in-world-war-i.pdf
    • http://www.gorillawalker.com/volatility-master-class-for-quants-wiley-finance.pdf
    • http://www.gorillawalker.com/sacred-nocturnes-piano-solo.pdf
    • http://www.gorillawalker.com/doppio-sogno-italian-edition.pdf
    • http://www.gorillawalker.com/heroism-of-hope-for-africa-patriotic-poems-on-a-dawn.pdf
    • http://www.gorillawalker.com/century-collection-mandolin-and-guitar-music-series-2-573-national.pdf
    • http://www.gorillawalker.com/agatha-christie-s-secret-notebooks-fifty-years-of-mysteries-in.pdf
    • http://www.gorillawalker.com/praise-based-management-a-positive-approach-to-improving-profits-and.pdf
    • http://www.gorillawalker.com/fairy-queen-v-s.pdf
    • http://www.gorillawalker.com/solo-challenges-disabilities-and-the-greatest-of-losses.pdf
    • http://www.gorillawalker.com/messe-breve-in-c-major-for-soli-chorus-and-orchestra.pdf
    • http://www.gorillawalker.com/landoll-s-creative-cooking-pasta.pdf
    • http://www.gorillawalker.com/the-ironies-of-affirmative-action-politics-culture-and-justice-in.pdf
    • http://www.gorillawalker.com/meta-emotion-how-families-communicate-emotionally.pdf
    • http://www.gorillawalker.com/rhinoplasty-the-art-the-science-2-volume-set.pdf
    • http://www.gorillawalker.com/metadata-applications-and-management-2003-2004-international-yearbook-of-library.pdf
    • http://www.gorillawalker.com/reactions-and-syntheses-in-the-organic-chemistry-laboratory.pdf
    • http://www.gorillawalker.com/84-recetas-para-preparar-panes-una-variada-selecci.pdf
    • http://www.gorillawalker.com/hairspray-the-roots.pdf
    • http://www.gorillawalker.com/combat-knives-and-knife-combat-knife-models-carrying-systems-combat.pdf
    • http://www.gorillawalker.com/pintupi-count
    • 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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