Malicious PDF — malware analysis report

Static analysis result for SHA-256 75a139472ce4949a…

MALICIOUS

PDF

41.1 KB Created: 2018-11-15 18:31:40 +03:00 Authoring application: Adobe Acrobat Pro 11.0.18 (via Adobe PDF Library 11.0)
MD5: 9835039a7f855465641c316e4c8ee728 SHA-1: 42f8eef99945bfa7ee9b5303bcdedf37a203e8c8 SHA-256: 75a139472ce4949a4e4fe75761d1f08eb8aaf080952d303ee5edb0ab704c92f4
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious with high confidence. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of links suggests a malicious intent, possibly for SEO manipulation or to distribute further malware. No scripts were extracted from this sample.

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/essential-vancouver-and-british-columbia-aa-essential.pdf
    • http://www.gorillawalker.com/fastmap-philadelphia-paperback.pdf
    • http://www.gorillawalker.com/fat-planet-the-obesity-trap-and-how-we-can-escape.pdf
    • http://www.gorillawalker.com/james-bond-007-collection-for-strings-violin-book-cd.pdf
    • http://www.gorillawalker.com/moral-thinking-its-levels-methods-and-point.pdf
    • http://www.gorillawalker.com/montana-phantom-the-haunted-hotel-case-century-series-novels-volume.pdf
    • http://www.gorillawalker.com/survival-skills-of-native-california.pdf
    • http://www.gorillawalker.com/mall-mania-mathstart-2.pdf
    • http://www.gorillawalker.com/the-official-dsa-theory-test-for-drivers-of-large-vehicles.pdf
    • http://www.gorillawalker.com/drills-exercises-to-improve-billiard-skills-japanese-how-to-become.pdf
    • http://www.gorillawalker.com/wounded-wounders-stories-of-men-in-prison.pdf
    • http://www.gorillawalker.com/stone-man-exile-book-1.pdf
    • http://www.gorillawalker.com/unleashing-change-a-study-of-organizational-renewal-in-government.pdf
    • http://www.gorillawalker.com/prep-for-praxis-praxis-ii-w-cd-2003-arco-preparation.pdf
    • http://www.gorillawalker.com/after-the-fall-before-the-fall-during-the-fall.pdf
    • http://www.gorillawalker.com/walking-shadow-spenser.pdf
    • http://www.gorillawalker.com/dirt-and-the-good-life.pdf
    • http://www.gorillawalker.com/representation-and-contestation-cultural-politics-in-a-political-century-at.pdf
    • http://www.gorillawalker.com/vehicle-restoration-log-steering-wheel-cover-s-m-car-journals.pdf
    • http://www.gorillawalker.com/cornelius-agrippa-v-1-the-life-of-henry-cornelius-agrippa.pdf
    • http://www.gorillawalker.com/shake-hands-with-a-bum.pdf
    • http://www.gorillawalker.com/knotty-number-problems-other-puzzles-mastermind-collection.pdf
    • http://www.gorillawalker.com/ovid-s-toyshop-of-the-heart-epistulae-heroidum-princeton-legacy.pdf
    • http://www.gorillawalker.com/key-to-algebra-answers-notes-for-books-1-4.pdf
    • http://www.gorillawalker.com/truck-stop-amy-part-2-to-serve-and-ingest.pdf
    • http://www.gorillawalker.com/automotive-heating-and-air-conditioning.pdf
    • http://www.gorillawalker.com/confessions-of-a-scholarship-winner-the-secrets-that-helped-me.pdf
    • http://www.gorillawalker.com/monster-hunter-alpha-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/mrcog-part-one-your-essential-revision-guide.pdf
    • http://www.gorillawalker.com/business-data-communications-basic-concepts-security-and-design-wiley-series.pdf
    • http://www.gorillawalker.com/integrated-waterflood-asset-management.pdf
    • http://www.gorillawalker.com/financial-risk-management-with-bayesian-estimation-of-garch-models-theory.pdf
    • http://www.gorillawalker.com/magnetic-travel-fun-20-magnet.pdf
    • http://www.gorillawalker.com/improving-measures-of-science-technology-and-innovation-interim-report.pdf
    • http://www.gorillawalker.com/radiology-in-veterinary-orthopedics.pdf
    • http://www.gorillawalker.com/shattered-mirror-den-of-shadows.pdf
    • http://www.gorillawalker.com/gilgamesh-a-verse-play-wesleyan-poetry-series.pdf
    • http://www.gorillawalker.com/for-your-own-good-hidden-cruelty-in-child-rearing-and.pdf
    • http://www.gorillawalker.com/it-looks-like-winter-presumut-unviar-presunto-inverno-poems-in.pdf
    • http://www.gorillawalker.com/vietnam-hidden-riches-of-a-magical-land.pdf
    • http://www.gorillawalker.com/montana-phantom-the-haunted-hotel-case-century-series-novels-volume
    • 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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