Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b9a12f71a9ec94a…

MALICIOUS

PDF

43.9 KB Created: 2019-04-03 18:20:33 +03:00 Authoring application: - (via pdfTeX-1.0b-pdfcrypt)
MD5: 18b309cd60fe9268b87cea562e706a15 SHA-1: b3c71ca6ae0ede21ca4d390af985fc4fecb5a108 SHA-256: 5b9a12f71a9ec94a48721817215a6a5c29c7f3da19b02f74d2a3afe8b8fd9a5a
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. This suggests a malicious intent, possibly for SEO manipulation or to distribute further malicious content. The ML classifier also flagged the document as malicious. While no scripts were extracted, the presence of numerous external links points towards a potential initial access vector via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/writing-device-drivers-for-sco-unix-a-practical-approach.pdf
    • http://www.gorillawalker.com/developing-a-safety-and-health-program-second-edition.pdf
    • http://www.gorillawalker.com/the-green-fire-burning-kindle-edition.pdf
    • http://www.gorillawalker.com/high-stakes-no-prisoners-a-winner-s-tale-of-greed.pdf
    • http://www.gorillawalker.com/daily-devotional-a-return-to-the-hebrew-roots-of-the.pdf
    • http://www.gorillawalker.com/how-to-prepare-for-the-nursing-school-entrance-exam-barron.pdf
    • http://www.gorillawalker.com/the-dangers-of-herbal-stimulants-drug-abuse-prevention-library.pdf
    • http://www.gorillawalker.com/the-anti-pelagian-imagination-in-political-theory-and-international-relations.pdf
    • http://www.gorillawalker.com/change-management-process-for-information-technology.pdf
    • http://www.gorillawalker.com/the-big-smoke-a-history-of-air-pollution-in-london.pdf
    • http://www.gorillawalker.com/muslim-saints-of-south-asia-the-eleventh-to-fifteenth-centuries.pdf
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    • http://www.gorillawalker.com/the-experience-of-eternity.pdf
    • http://www.gorillawalker.com/lean-production-48-success-secrets-48-most-asked-questions-on.pdf
    • http://www.gorillawalker.com/a-season-for-tending-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/independent-learning-project-for-advanced-chemistry-teachers-and-technicians-notes.pdf
    • http://www.gorillawalker.com/drug-testing-at-issue.pdf
    • http://www.gorillawalker.com/wordpress-websites-step-by-step-the-complete-beginner-s-guide.pdf
    • http://www.gorillawalker.com/chikunousyou-hanano-syujyutu-nikki-japanese-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/vacation-bible-school-vbs-2015-shining-star-teen-student-handbook.pdf
    • http://www.gorillawalker.com/the-4-chord-ukulele-songbook-strum-sing-series.pdf
    • http://www.gorillawalker.com/fodor-s-prague-with-the-best-of-the-czech-republic.pdf
    • http://www.gorillawalker.com/international-security-politics-policy-prospects.pdf
    • http://www.gorillawalker.com/supplemente-enthaltend-quellen-zu-h-ndel-s-werken-volume-1.pdf
    • http://www.gorillawalker.com/essentials-of-transdisciplinary-research-using-problem-centered-methodologies-qualitative-essentials.pdf
    • http://www.gorillawalker.com/the-sweetness-of-power-machiavelli-s-discourses-and-guicciardini-s.pdf
    • http://www.gorillawalker.com/el-rockero-y-la-modelo-que-llegaron-v-rgenes-al.pdf
    • http://www.gorillawalker.com/hungary-business-and-investment-opportunities-yearbook.pdf
    • http://www.gorillawalker.com/the-dead-sea-scrolls-and-the-christian-myth.pdf
    • http://www.gorillawalker.com/techone-fuels-and-emissions.pdf
    • http://www.gorillawalker.com/industrial-relations-a-psychological-approach.pdf
    • http://www.gorillawalker.com/art-in-the-white-house-a-nation-s-pride.pdf
    • http://www.gorillawalker.com/a-baker-s-dozen-13-tales-of-murder-and-more.pdf
    • http://www.gorillawalker.com/positive-youth-development-through-sport-routledge-studies-in-physical-education.pdf
    • http://www.gorillawalker.com/reading-and-writing-in-science-tools-to-develop-disciplinary-literacy.pdf
    • http://www.gorillawalker.com/atlanta-scenes-images-of-america-arcadia-publishing.pdf
    • http://www.gorillawalker.com/semi-bounded-differential-operators-contractive-semigroups-and-beyond-operator-theory.pdf
    • http://www.gorillawalker.com/more-than-a-cowboy-reckless-arizona.pdf
    • http://www.gorillawalker.com/conservatory-style-garden-rooms-glasshouses-and-sunrooms.pdf
    • http://www.gorillawalker.com/confessions-of-a-d-list-supervillain.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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