Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca9deb76722e46b4…

MALICIOUS

PDF

41.2 KB Created: 2019-03-17 07:55:26 +03:00 Authoring application: XSL Formatter V4.3 MR8 for Windows (via Acrobat Distiller 7.0.5 (Windows))
MD5: da77f5510e4873fabb031c6d24bbb492 SHA-1: 310c53e99cbd14b449549deb39af2834b33bffa9 SHA-256: ca9deb76722e46b4f473018fc1cd9390de6a25907efe805fc3c45d586e18af3a
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily truncated, limiting further analysis of the specific lure.

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/hope-lives-here.pdf
    • http://www.gorillawalker.com/breaking-rules-kindle-edition.pdf
    • http://www.gorillawalker.com/offshore-supply-vessels.pdf
    • http://www.gorillawalker.com/driven-how-human-nature-shapes-our-choices.pdf
    • http://www.gorillawalker.com/serving-time-at-camp-and-other-stories-fast-track.pdf
    • http://www.gorillawalker.com/sex-offender-registration-and-notification-act-jurisdictions-face-challenges-to.pdf
    • http://www.gorillawalker.com/fatigue-of-fiber-reinforced-composites-engineering-materials-and-processes.pdf
    • http://www.gorillawalker.com/bouncing-balls-on-mars-computing-an-article-from-mechanical-engineering.pdf
    • http://www.gorillawalker.com/farmyard-boogie.pdf
    • http://www.gorillawalker.com/my-god-and-my-all-the-life-of-saint-francis.pdf
    • http://www.gorillawalker.com/analysis-of-energy-efficiency-of-industrial-processes.pdf
    • http://www.gorillawalker.com/nlp-business-masterclass-skills-for-realizing-human-potential.pdf
    • http://www.gorillawalker.com/the-other-casualty-of-war.pdf
    • http://www.gorillawalker.com/bioenergetics-at-a-glance-an-illustrated-introduction.pdf
    • http://www.gorillawalker.com/developmental-psychology-student-handbook-to-psychology.pdf
    • http://www.gorillawalker.com/river-of-words-young-poets-and-artists-on-the-nature.pdf
    • http://www.gorillawalker.com/freud-v-3-appraisals-and-reappraisals.pdf
    • http://www.gorillawalker.com/the-strange-case-of-origami-yoda-origami-yoda-series-book.pdf
    • http://www.gorillawalker.com/simon-and-schuster-s-concise-international-dictionary-english-spanish-english.pdf
    • http://www.gorillawalker.com/collins-cambridge-igcse-chemistry-student-book-cambridge-igcse-second-edition.pdf
    • http://www.gorillawalker.com/sam-at-the-seaside-kids-can-read.pdf
    • http://www.gorillawalker.com/revolutionary-iran-and-the-united-states-us-foreign-policy-and.pdf
    • http://www.gorillawalker.com/funktional-strukturale-ethnographie-in-europa-texte-aus-den-1920er-und.pdf
    • http://www.gorillawalker.com/sister-sarah-s-eurojackpot-lucky-address-finders-kindle-edition.pdf
    • http://www.gorillawalker.com/innovation-and-invention-in-medical-devices-workshop-summary.pdf
    • http://www.gorillawalker.com/stalwart-sweden.pdf
    • http://www.gorillawalker.com/automobile-quarterly-volume-36-number-1.pdf
    • http://www.gorillawalker.com/grade-3-parish-catechist-guide-our-response-to-god-s.pdf
    • http://www.gorillawalker.com/youth-pornography-and-the-internet.pdf
    • http://www.gorillawalker.com/eve-s-journey-a-woman-s-quest-for-the-city.pdf
    • http://www.gorillawalker.com/pissarro-creating-the-impressionist-landscape.pdf
    • http://www.gorillawalker.com/exploring-the-heritage-of-john-calvin.pdf
    • http://www.gorillawalker.com/you-can-get-pregnant-over-40-naturally-overcoming-infertility-and.pdf
    • http://www.gorillawalker.com/adland-a-global-history-of-advertising.pdf
    • http://www.gorillawalker.com/the-great-omission-fulfilling-christ-s-commission-completely.pdf
    • http://www.gorillawalker.com/magical-menagerie-an-animal-menagerie-2002.pdf
    • http://www.gorillawalker.com/mcdougalls-great-lakes-whalebacks-wi-images-of-america.pdf
    • http://www.gorillawalker.com/before-tomorrow-comes-to-kenya-photographing-the-vanishing-world-of.pdf
    • http://www.gorillawalker.com/christ-above-all-conversational-evangelism-with-people-of-other-faiths.pdf
    • http://www.gorillawalker.com/vitiligo-a-monograph-on-the-basic-and-clinical-science.pdf
    • http://www.gorillawalker.com/my-god-and-my-all-the-life-
    • 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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