Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c41d48ee3e3dceb…

MALICIOUS

PDF

43.8 KB Created: 2018-12-14 20:04:07 +03:00 Authoring application: ABBYY FineReader 8.0 Professional Edition
MD5: e61b004456ca4b541b2445b677f5e00d SHA-1: 1dba32f60e98532c0ab3dbe5ad25b6e2fe1d0248 SHA-256: 7c41d48ee3e3dceb5d1ca19c453e5e19170c37dcba830f4f320b8c9f541fc7bf
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to various PDF documents on the same domain, identified by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to manipulate search engine results or distribute content. While no scripts were extracted, the ML classifier and the sheer volume of external links indicate malicious intent. The attack pattern is likely a form of SEO spam or a content distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8223

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/infinity-gauntlet-omnibus.pdf
    • http://www.gorillawalker.com/do-it-yourself-natural-eyesight-improvement-original-and-modern-bates.pdf
    • http://www.gorillawalker.com/game-development-essentials-video-game-art-instructor-s-e-resource.pdf
    • http://www.gorillawalker.com/modern-mathematics-1900-to-1950-pioneers-in-mathematics.pdf
    • http://www.gorillawalker.com/either-or-a-fragment-of-life-the-great-philosophers-series.pdf
    • http://www.gorillawalker.com/making-music-with-your-computer.pdf
    • http://www.gorillawalker.com/seismic-design-of-wood-structures-skga-web-seminar-dvd-with.pdf
    • http://www.gorillawalker.com/aviation-aerospace-almanac-2001.pdf
    • http://www.gorillawalker.com/formal-assessment-with-test-bank-cd-rom-silver-level-writing.pdf
    • http://www.gorillawalker.com/phoenicians-peoples-of-the-past.pdf
    • http://www.gorillawalker.com/negotiating-and-influencing-skills-the-art-of-creating-and-claiming.pdf
    • http://www.gorillawalker.com/the-un-gandhian-gandhi-the-life-and-afterlife-of-the.pdf
    • http://www.gorillawalker.com/greetings-from-ocean-grove-new-jersey-schiffer-book.pdf
    • http://www.gorillawalker.com/multistate-bar-exam-audio-review-contracts-mbe-audio-review.pdf
    • http://www.gorillawalker.com/the-better-story-queer-affects-from-the-middle-east.pdf
    • http://www.gorillawalker.com/miss-passport-city-guides-presents-minia-3-day-unforgettable-mini.pdf
    • http://www.gorillawalker.com/the-real-vocal-book-volume-iv-high-voice.pdf
    • http://www.gorillawalker.com/big-cat-and-little-dog-go-shopping-a-beginning-to.pdf
    • http://www.gorillawalker.com/the-dragon-in-the-sea.pdf
    • http://www.gorillawalker.com/bridge-and-highway-structure-rehabilitation-and-repair.pdf
    • http://www.gorillawalker.com/cthulhu-live-3rd-edition.pdf
    • http://www.gorillawalker.com/the-lost-college-and-other-oxford-stories.pdf
    • http://www.gorillawalker.com/balance-of-payments-exchange-rates-and-competitiveness-in-transition-economies.pdf
    • http://www.gorillawalker.com/administration-nvq-level-3.pdf
    • http://www.gorillawalker.com/ecnamor-romance-backwards.pdf
    • http://www.gorillawalker.com/raps-riddles-and-concrete-adventures-in-literacy.pdf
    • http://www.gorillawalker.com/sentence-writing.pdf
    • http://www.gorillawalker.com/dictionary-of-curious-phrases-from-red-herrings-to-brass-tacks.pdf
    • http://www.gorillawalker.com/toronto-mississippi.pdf
    • http://www.gorillawalker.com/wellingtons-doctors-the-british-army-medical-services-in-the-napleonic.pdf
    • http://www.gorillawalker.com/partial-differential-equations-topics-in-fourier-analysis.pdf
    • http://www.gorillawalker.com/the-convoluted-universe-book-two-peoples-of-the-ancient-world.pdf
    • http://www.gorillawalker.com/star-wars-knight-errant.pdf
    • http://www.gorillawalker.com/lonely-planet-london.pdf
    • http://www.gorillawalker.com/what-god-wishes-christians-knew-about-christianity.pdf
    • http://www.gorillawalker.com/right-lane-ends-bike-around-the-world-volume-i-seattle.pdf
    • http://www.gorillawalker.com/mean-jeans-manufacturing-co.pdf
    • http://www.gorillawalker.com/scottish-colonial-schemes-1620-1686.pdf
    • http://www.gorillawalker.com/women-in-hollywood-from-vamp-to-studio-head.pdf
    • http://www.gorillawalker.com/mri-of-the-fetal-brain-normal-development-and-cerebral-pathologies.pdf
    • http://www.gorillawalker.com/se
    • 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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