Malicious PDF — malware analysis report

Static analysis result for SHA-256 0157cac4da26d055…

MALICIOUS

PDF

42.2 KB Created: 2018-12-28 20:04:13 +03:00 Authoring application: PScript5.dll Version 5.2.2 (via Acrobat Distiller 5.0.5 (Windows))
MD5: 4fb47933b8843be6207fd2f8ae4e5037 SHA-1: fc0e5d8e6973c7177d92eec8bad916d9c47cdcc9 SHA-256: 0157cac4da26d05587539d513129a8f9a941a4840d2ebbe8e6efe768930ec010
92 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged the document as malicious. While no scripts were extracted, the sheer volume of links suggests a malicious intent, possibly to manipulate search engine rankings or to serve as a distribution point for further malicious content.

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/for-the-love-of-magic-a-spellbound-falls-romance.pdf
    • http://www.gorillawalker.com/yesterday-sab.pdf
    • http://www.gorillawalker.com/the-market-gardener-a-successful-grower-s-handbook-for-small.pdf
    • http://www.gorillawalker.com/an-experimental-study-of-sleep-from-the-physiological-laboratory-of.pdf
    • http://www.gorillawalker.com/a-souvenir-disney-songbook-favorite-songs-from-disneyland-walt-disney.pdf
    • http://www.gorillawalker.com/teenage-doll.pdf
    • http://www.gorillawalker.com/the-binding-stone-the-dragon-below-book-1.pdf
    • http://www.gorillawalker.com/nanopanties.pdf
    • http://www.gorillawalker.com/a-respectable-actress-digital.pdf
    • http://www.gorillawalker.com/diving-in-high-risk-environments-third-edition.pdf
    • http://www.gorillawalker.com/great-seafood-dishes.pdf
    • http://www.gorillawalker.com/electroactive-polymers-for-corrosion-control-acs-symposium-series.pdf
    • http://www.gorillawalker.com/the-book-of-governors-kegan-paul-library-of-ancient-egypt.pdf
    • http://www.gorillawalker.com/shattering-earthquakes-awesome-forces-of-nature.pdf
    • http://www.gorillawalker.com/the-shurley-method-english-made-easy-level-7-teacher-s.pdf
    • http://www.gorillawalker.com/selling-of-contraception-the-dalkon-shield-case-sexuality-and-wo.pdf
    • http://www.gorillawalker.com/diccionario-de-modismos-ingleses-y-norteamericanos-dictionary-of-english-and.pdf
    • http://www.gorillawalker.com/hearing-god-for-intimacy-healing-creativity-meditation-and-dream-interpretation.pdf
    • http://www.gorillawalker.com/must-we-suffer-our-way-to-death-cultural-and-theological.pdf
    • http://www.gorillawalker.com/poirot-s-finest-cases-eight-full-cast-bbc-radio-dramatisations.pdf
    • http://www.gorillawalker.com/galateo-of-manners-and-behaviours-in-familiar-conversation.pdf
    • http://www.gorillawalker.com/prem-bengali-edition.pdf
    • http://www.gorillawalker.com/personal-bankruptcy-for-dummies-for-dummies-lifestyles-paperback.pdf
    • http://www.gorillawalker.com/make-him-beg-you-back-in-8-simple-steps-the.pdf
    • http://www.gorillawalker.com/healing-psoriasis-the-natural-alternative-by-pagano-dc-john-o.pdf
    • http://www.gorillawalker.com/the-montignac-diet-cookbook-by-michel-montignac-may-5-2010.pdf
    • http://www.gorillawalker.com/billion-dollar-lessons-what-you-can-learn-from-the-most.pdf
    • http://www.gorillawalker.com/a-field-guide-to-southern-new-england-railroad-depots-and.pdf
    • http://www.gorillawalker.com/how-to-forecast-interest-rates-a-guide-to-profits-for.pdf
    • http://www.gorillawalker.com/tombs-at-giza-volume-1-kaiemankh-g4561-and-seshemnefer-i.pdf
    • http://www.gorillawalker.com/democracy-bolinda-beginner-guides-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/mathematics-and-plausible-reasoning-vol-i-induction-and-analogy-in.pdf
    • http://www.gorillawalker.com/the-first-90-days-in-government-critical-success-strategies-for.pdf
    • http://www.gorillawalker.com/biology-and-fertility-of-tropical-soils-report-of-the-tropical.pdf
    • http://www.gorillawalker.com/introduction-to-modern-number-theory-fundamental-problems-ideas-and-theories.pdf
    • http://www.gorillawalker.com/the-harvard-dictionary-of-music-harvard-university-press-reference-library.pdf
    • http://www.gorillawalker.com/several-complex-variables-proceedings-of-the-1981-hangzhou-conference.pdf
    • http://www.gorillawalker.com/scandinavian-feasts.pdf
    • http://www.gorillawalker.com/the-selfish-giant-minedition-minibooks.pdf
    • http://www.gorillawalker.com/the-closers-harry-bosch-series-book-11-unabridged-audible-audio.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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