Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a13fe500b0241e5…

MALICIOUS

PDF

41.0 KB Created: 2018-12-03 17:09:32 +03:00 Authoring application: LaTeX with hyperref package (via PDFlib PLOP 2.0.0p6 (SunOS)/Acrobat Distiller 5.0.5 (Windows))
MD5: e694e61c460b2a6c5c15251fa472a30e SHA-1: a81e7d0218bdf689dcf912d0fb49d8b5dcf679e1 SHA-256: 2a13fe500b0241e519875c1c776d5936a165e8e05b811d1585f75bad5231ed2c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by an ML classifier and contains a significant number of embedded external links, indicating a potential link farm or distribution mechanism. While no scripts were extracted, the heuristic 'PDF_SEO_LINK_FARM' strongly suggests the document's purpose is to manipulate search engine results or redirect users to numerous other PDF documents hosted on the 'gorillawalker.com' domain. The exact intent beyond link manipulation is unclear without further analysis of the linked content.

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/heat-transfer-2nd-edition.pdf
    • http://www.gorillawalker.com/hay-alguien-ahi-biblioteca-gaarder-las-tres-edades-the-three.pdf
    • http://www.gorillawalker.com/prentice-hall-science-explorer-environmental-science.pdf
    • http://www.gorillawalker.com/citrus-vol-3.pdf
    • http://www.gorillawalker.com/sacred-song-of-the-hermit-thrush-a-native-american-legend.pdf
    • http://www.gorillawalker.com/the-10-best-decisions-a-leader-can-make.pdf
    • http://www.gorillawalker.com/cults-opposing-viewpoints.pdf
    • http://www.gorillawalker.com/music-and-video-retailing-in-the-us-market-snapshot-to.pdf
    • http://www.gorillawalker.com/milady-s-standard-esthetics-fundamentals.pdf
    • http://www.gorillawalker.com/defending-the-undefendable.pdf
    • http://www.gorillawalker.com/a-world-of-imponderables-imponderables-series.pdf
    • http://www.gorillawalker.com/paul-l-vy-and-maurice-fr-chet-50-years-of.pdf
    • http://www.gorillawalker.com/the-bolivar-countries-colombia-ecuador-venezuela-invitation-to-travel-series.pdf
    • http://www.gorillawalker.com/border-reiver-1513-1603-warrior.pdf
    • http://www.gorillawalker.com/finding-balance.pdf
    • http://www.gorillawalker.com/did-my-genes-make-me-do-it-and-other-philosophical.pdf
    • http://www.gorillawalker.com/protocolos-de-urg-ncia-em-pediatria-portuguese-edition.pdf
    • http://www.gorillawalker.com/china-and-the-world-balance-imbalance-and-rebalance-china-in.pdf
    • http://www.gorillawalker.com/3-quartets-for-two-violins-viola-and-cello-with-bass.pdf
    • http://www.gorillawalker.com/38-000-for-a-friendly-face.pdf
    • http://www.gorillawalker.com/fundamentals-of-cancer-epidemiology-2nd-second-edition.pdf
    • http://www.gorillawalker.com/advertising-playing-cards.pdf
    • http://www.gorillawalker.com/rabbits-keeping-and-caring-for-your-pet.pdf
    • http://www.gorillawalker.com/automotive-electrics-and-electronics.pdf
    • http://www.gorillawalker.com/blue-girl.pdf
    • http://www.gorillawalker.com/treatment-options-in-addiction-medical-management-of-alcohol-and-opiate.pdf
    • http://www.gorillawalker.com/pablo-picasso-postcard-bk.pdf
    • http://www.gorillawalker.com/gaudi-pop-ups.pdf
    • http://www.gorillawalker.com/desperately-delicious-seven-sexy-romance-collection.pdf
    • http://www.gorillawalker.com/primo-encores-sheet-music-book-for-elementary-level-ensembles-for.pdf
    • http://www.gorillawalker.com/dancing-with-danger.pdf
    • http://www.gorillawalker.com/small-wonder-the-little-red-schoolhouse-in-history-and-memory.pdf
    • http://www.gorillawalker.com/cooking-for-candida-recipes-and-diet-plans-with-vegetarian-options.pdf
    • http://www.gorillawalker.com/self-and-secrecy-in-early-islam-studies-in-comparative-religion.pdf
    • http://www.gorillawalker.com/amazing-mrs-pollifax.pdf
    • http://www.gorillawalker.com/twelve-ways-to-stay-sane-in-jakarta-running-in-africa.pdf
    • http://www.gorillawalker.com/motivating-students-to-learn-2nd-edition.pdf
    • http://www.gorillawalker.com/the-practice-of-smallholder-irrigation-case-studies-from-zimbabwe.pdf
    • http://www.gorillawalker.com/technical-writing-dantes-dsst-test-study-guide-pass-your-class.pdf
    • http://www.gorillawalker.com/too-taboo-7-book-taboo-mega-bundle-volume-1.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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