Malicious PDF — malware analysis report

Static analysis result for SHA-256 874e959375877c75…

MALICIOUS

PDF

42.0 KB Created: 2018-12-07 18:27:49 +03:00 Authoring application: Acrobat PDFMaker 11 for Word (via Adobe PDF Library 11.0)
MD5: 7b43d8ea49489c522bd74a5f8d42a10e SHA-1: 1df9b4b224a5561901bb756c087a1b3f1b4abd37 SHA-256: 874e959375877c75002571be6cc18df21b906e167fdde31d8800ad6533f5d3fd
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, primarily hosted on 'gorillawalker.com'. This heuristic, combined with the ML classifier's high confidence, suggests the document is designed to drive traffic to a link farm, potentially for SEO manipulation or to host malicious content. No scripts were extracted, and the document body was unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/browse-s-introduction-set-browse-s-introduction-to-the-symptoms.pdf
    • http://www.gorillawalker.com/strategic-communication-in-business-and-the-professions-8th-edition.pdf
    • http://www.gorillawalker.com/pegasus-in-harness-victorian-publishing-and-w-m-thackeray-victorian.pdf
    • http://www.gorillawalker.com/glencoe-math-course-3-student-edition-volume-2-math-applic.pdf
    • http://www.gorillawalker.com/women-in-western-political-thought.pdf
    • http://www.gorillawalker.com/some-of-the-kinder-planets-turtleback-school-library-binding-edition.pdf
    • http://www.gorillawalker.com/omnibus-sexy-secrets-vol-1-4.pdf
    • http://www.gorillawalker.com/black-cat-vol-2-v-2.pdf
    • http://www.gorillawalker.com/solving-the-riddle-of-self-the-search-for-self-discovery.pdf
    • http://www.gorillawalker.com/chroniques-de-l-espoir-ecrits-patriotiques-1991-1996-french-edition.pdf
    • http://www.gorillawalker.com/world-killer-murder-at-the-happiest-place-on-earth-the.pdf
    • http://www.gorillawalker.com/my-dog-s-a-scaredy-cat-10-a-halloween-tail.pdf
    • http://www.gorillawalker.com/php-learn-php-programming-fast-php-programming-php-programming-mysql.pdf
    • http://www.gorillawalker.com/thanksgiving-and-christmas-recipes-delicious-recipes-book-15-kindle-edition.pdf
    • http://www.gorillawalker.com/how-to-be-an-advanced-driver-pass-your-advanced-driving.pdf
    • http://www.gorillawalker.com/el-castigo-sin-venganza.pdf
    • http://www.gorillawalker.com/lighthouse-landscape-needlepoint-fabric-large-bible-cover.pdf
    • http://www.gorillawalker.com/elements-of-etiquette-a-guide-to-table-manners-in-an.pdf
    • http://www.gorillawalker.com/the-emergence-of-japanese-kingship.pdf
    • http://www.gorillawalker.com/port-douglas.pdf
    • http://www.gorillawalker.com/a-new-arabic-grammar-of-the-written-language.pdf
    • http://www.gorillawalker.com/jesus-is-wonderful-junior-kids-church.pdf
    • http://www.gorillawalker.com/a-mary-blair-treasury-of-golden-books.pdf
    • http://www.gorillawalker.com/p-47-thunderbolt-in-action-aircraft-no-208.pdf
    • http://www.gorillawalker.com/theodor-herzl-a-new-reading.pdf
    • http://www.gorillawalker.com/what-you-can-t-have-kindle-edition.pdf
    • http://www.gorillawalker.com/the-handbook-of-classroom-discourse-and-interaction-blackwell-handbooks-in.pdf
    • http://www.gorillawalker.com/first-tastes-a-first-time-lesbian-erotica-romance-short-bundle.pdf
    • http://www.gorillawalker.com/the-idea-of-america-reflections-on-the-birth-of-the.pdf
    • http://www.gorillawalker.com/the-decline-and-fall-of-ibm-end-of-an-american.pdf
    • http://www.gorillawalker.com/poems-and-readings-for-christenings-and-naming-ceremonies.pdf
    • http://www.gorillawalker.com/negocios.pdf
    • http://www.gorillawalker.com/allan-blank-snapshots-a-suite-of-five.pdf
    • http://www.gorillawalker.com/terrestrial-rare-gases-proceedings-of-the-u-s-japan-seminar.pdf
    • http://www.gorillawalker.com/let-s-take-care-of-our-new-leopard-gecko-let.pdf
    • http://www.gorillawalker.com/ganar-dinero-con-opciones-binarias-spanish-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/to-vietnam-in-vain-memoir-of-an-irish-american-intelligence.pdf
    • http://www.gorillawalker.com/logging-flight-time-and-other-aviation-truths-near-truths-and.pdf
    • http://www.gorillawalker.com/i-know-who-holds-tomorrow-a-novel.pdf
    • http://www.gorillawalker.com/wojtek-the-bear-paperback-polish-war-hero.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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