Malicious PDF — malware analysis report

Static analysis result for SHA-256 40ef18154bb5640c…

MALICIOUS

PDF

41.6 KB Created: 2019-03-17 07:01:22 +03:00 Authoring application: Acrobat PDFMaker 8.1 for Word (via Acrobat Distiller 8.2.6 (Windows))
MD5: e1ccf76a7c5b9981ce4b6537c9fc79d9 SHA-1: 9027fef9dc5f19a4609a2f785654e268cb76454b SHA-256: 40ef18154bb5640c81df13ca38a6809b7293d8ebd04c5c2e347d3924e580a5d3
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

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/foundations-of-orientation-and-mobility-history-and-theory-kindle-edition.pdf
    • http://www.gorillawalker.com/family-tree-page-ideas-for-scrapbookers-memory-makers.pdf
    • http://www.gorillawalker.com/grenada-island-of-spice-map-scale-1-50-000.pdf
    • http://www.gorillawalker.com/methods-of-resolving-conflicts-between-treaties-graduate-institute-of-international.pdf
    • http://www.gorillawalker.com/tennessee-central-railway-history-locomotives-and-cars.pdf
    • http://www.gorillawalker.com/materials-why-it-works.pdf
    • http://www.gorillawalker.com/venice-history-of-the-floating-city.pdf
    • http://www.gorillawalker.com/antes-de-tener-un-cachorro-spanish-edition.pdf
    • http://www.gorillawalker.com/bali-and-lombok-travellers.pdf
    • http://www.gorillawalker.com/the-journals-of-george-whitefield-spiritual-lives.pdf
    • http://www.gorillawalker.com/ethics-and-corporate-social-responsibility-why-giants-fall.pdf
    • http://www.gorillawalker.com/thinking-the-poetic-measure-of-justice-holderlin-heidegger-celan-suny.pdf
    • http://www.gorillawalker.com/more-joy-in-heaven-confession-the-sacrament-of-reconciliation.pdf
    • http://www.gorillawalker.com/the-maiden-the-marquis-marquis-de-sade-group-erotica-tale.pdf
    • http://www.gorillawalker.com/multiball-contact.pdf
    • http://www.gorillawalker.com/minecraft-chasing-herobrine-into-the-dirty-mountains-diary-of-steve.pdf
    • http://www.gorillawalker.com/the-black-and-white-photography-book-second-revised-edition.pdf
    • http://www.gorillawalker.com/human-figure-drawings-of-mildly-handicapped-students-learning-disabled-mildly.pdf
    • http://www.gorillawalker.com/edward-r-murrow-and-the-birth-of-broadcast-journalism-turning.pdf
    • http://www.gorillawalker.com/cybersex.pdf
    • http://www.gorillawalker.com/scientific-american-supplement-no-447-july-26-1884.pdf
    • http://www.gorillawalker.com/le-livre-de-l-ind-pendance.pdf
    • http://www.gorillawalker.com/pain-current-understanding-emerging-therapies-and-novel-approaches-to-drug.pdf
    • http://www.gorillawalker.com/wolf-academy.pdf
    • http://www.gorillawalker.com/sergei-rachmaninov-classic-fm-lifelines.pdf
    • http://www.gorillawalker.com/every-man-a-tiger.pdf
    • http://www.gorillawalker.com/caress-part-two-arcadia.pdf
    • http://www.gorillawalker.com/koukousotugyoumadeno-sakkasenjutu-japanese-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/gmat-lesson-book-kaplan-test-prep-and-admissions-paperback.pdf
    • http://www.gorillawalker.com/the-romantic-architecture-of-herman-melville-s-moby-dick.pdf
    • http://www.gorillawalker.com/bantams-and-miniature-fowl.pdf
    • http://www.gorillawalker.com/legal-pluralism-and-empires-1500-1850.pdf
    • http://www.gorillawalker.com/hagakure-the-code-of-the-samurai-the-manga-edition.pdf
    • http://www.gorillawalker.com/little-black-songbook-of-chartbusters.pdf
    • http://www.gorillawalker.com/100-naked-girls-on-a-chair-german-english-and-french.pdf
    • http://www.gorillawalker.com/the-blues-line-blues-lyrics-from-leadbelly-to-muddy-waters.pdf
    • http://www.gorillawalker.com/i-m-hungry-easy-family-recipes-free-from-milk-egg.pdf
    • http://www.gorillawalker.com/the-maxillary-sinus-and-its-dental-implications-dental-practical-handbooks.pdf
    • http://www.gorillawalker.com/england-before-the-norman-conquest-by-the-author-of-domestic.pdf
    • http://www.gorillawalker.com/the-school-of-gallantry-boxed-set-two-night-of-pleasure.pdf
    • http://www.gorillawalker.com/materi
    • 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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