Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b36ac7fb7158cda…

MALICIOUS

PDF

42.4 KB Created: 2018-12-07 18:28:30 +03:00 Authoring application: Adobe Acrobat 6.02 (via Adobe Acrobat 6.02 Paper Capture Plug-in)
MD5: 5a4224d04e120fbe68b177516564e8c2 SHA-1: 05f50e1fd4d50be3ca9518a3cd149b789b86f352 SHA-256: 7b36ac7fb7158cda432d6c4096ac348b97708c5a9ac5407c90ca8677c699dcd9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the document body is heavily obfuscated, the presence of numerous links to external PDFs suggests an attempt to manipulate search engine rankings or to distribute further malicious content. The ML classifier and ClamAV detection also indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9027

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7140549-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7140549-0
  • 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/the-heidelberg-catechism-extended-annotated-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/wittgenstein-s-folly.pdf
    • http://www.gorillawalker.com/deconstructing-flexicurity-and-developing-alternative-approaches-towards-new-concepts-and.pdf
    • http://www.gorillawalker.com/employee-rights-and-employer-wrongs.pdf
    • http://www.gorillawalker.com/proteins-biochemistry-and-biotechnology.pdf
    • http://www.gorillawalker.com/liza-s-choice.pdf
    • http://www.gorillawalker.com/sql-visual-quickstart-guide-3rd-edition.pdf
    • http://www.gorillawalker.com/bridging-the-storm-a-sweet-paranormal-regency-storm-series-book.pdf
    • http://www.gorillawalker.com/a-degree-of-mastery-a-journey-through-book-arts-apprenticeship.pdf
    • http://www.gorillawalker.com/the-pig-war-the-last-canadaus-border-conflict-amazing-stories.pdf
    • http://www.gorillawalker.com/set-for-conestoga-college-professional-cooking-for-canadian-chefs-5th.pdf
    • http://www.gorillawalker.com/two-greedy-bears-adapted-from-a-hungarian-folk-tale.pdf
    • http://www.gorillawalker.com/tilt-dreams-of-chaos-volume-2.pdf
    • http://www.gorillawalker.com/an-introduction-to-old-occitan-introductions-to-older-languages.pdf
    • http://www.gorillawalker.com/steve-jobs-real-life-reader-biography.pdf
    • http://www.gorillawalker.com/lebe-ich-wei.pdf
    • http://www.gorillawalker.com/what-s-great-about-alabama-our-great-states.pdf
    • http://www.gorillawalker.com/martha-rosler-passionate-signals.pdf
    • http://www.gorillawalker.com/report-from-hokkaido-the-remains-of-russian-culture-in-northern.pdf
    • http://www.gorillawalker.com/signal-processing-and-linear-systems.pdf
    • http://www.gorillawalker.com/tortured-enlightenment-writing-and-reading-in-kafka-s-in-the.pdf
    • http://www.gorillawalker.com/mass-no-5-d-678-vocal-score-a2712.pdf
    • http://www.gorillawalker.com/nash-s-house-a-kid-s-guide-to-the-house.pdf
    • http://www.gorillawalker.com/gin-tama-tome-9-french-edition.pdf
    • http://www.gorillawalker.com/baysian-nonparametrics-via-neural-networks-asa-siam-series-on-statistics.pdf
    • http://www.gorillawalker.com/reinardus-yearbook-of-the-international-reynard-society-volume-26-2014.pdf
    • http://www.gorillawalker.com/an-account-of-jamaica-and-its-inhabitants.pdf
    • http://www.gorillawalker.com/borderlander-the-life-of-james-kirker-1793-150-1852.pdf
    • http://www.gorillawalker.com/avoiding-common-financial-mistakes.pdf
    • http://www.gorillawalker.com/the-lego-mindstorms-nxt-2-0-discovery-book-a-beginner.pdf
    • http://www.gorillawalker.com/rand-mcnally-atlas-of-the-united-states.pdf
    • http://www.gorillawalker.com/the-alabama-folk-lyric-a-study-in-origins-and-media.pdf
    • http://www.gorillawalker.com/aprende-algo-poemas-para-despertar-el-interes.pdf
    • http://www.gorillawalker.com/in-this-way-i-was-saved-a-novel.pdf
    • http://www.gorillawalker.com/the-civil-corporation.pdf
    • http://www.gorillawalker.com/the-sociological-turn-in-translation-and-interpreting-studies-benjamins-current.pdf
    • http://www.gorillawalker.com/palabras-de-los-maestros-ascendidos-vol-i-spanish-edition.pdf
    • http://www.gorillawalker.com/chassidic-adventure-classic-15-beyond-the-warpway-again-chassidic-adventure.pdf
    • http://www.gorillawalker.com/the-os-2-warp-survival-guide.pdf
    • http://www.gorillawalker.com/women-s-fitness-program-development.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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