Malicious PDF — malware analysis report

Static analysis result for SHA-256 86ab21ee4ebc801b…

MALICIOUS

PDF

42.3 KB Created: 2019-02-13 02:15:30 +03:00 Authoring application: LaTeX with hyperref package (via pdfTeX-1.40.4)
MD5: 2fd9e73a02839ebe983bb7378fa7970a SHA-1: b84387cc7acd67e93fa16eacb3b6b7c5e94ffc0e SHA-256: 86ab21ee4ebc801b8fe8f8650bc3b66d2af60def25b2a4ba07085e1cc5538c31
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which appear to be SEO-optimized book titles, suggesting a link farm or SEO spamming operation. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates the document's content is designed to trick users into paying fees for non-existent prizes or parcels. ClamAV detection as 'Pdf.Dropper.Agent' further supports its malicious nature. No scripts were extracted, but the link farm and scam lure are sufficient indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

Heuristics 4

  • 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-7141239-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7141239-0
  • 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/banking-finance-and-accounting-concepts-methodologies-tools-and-applications-3.pdf
    • http://www.gorillawalker.com/qigong-meets-quantum-physics-experiencing-cosmic-oneness.pdf
    • http://www.gorillawalker.com/respiratory-disease-in-children-exposed-to-sulfur-oxides-and-particulates.pdf
    • http://www.gorillawalker.com/sedimentary-provenance-and-petrogenesis-perspectives-from-petrography-and-geochemistry-special.pdf
    • http://www.gorillawalker.com/claimed-the-stranger-post-apocalyptic-alpha-male-bdsm-romance-kindle.pdf
    • http://www.gorillawalker.com/mole-catches-the-sky-navajo-english.pdf
    • http://www.gorillawalker.com/symphony-no-5-reformation-op-107-miniature-score-miniature-score.pdf
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    • http://www.gorillawalker.com/techniques-for-corrosion-monitoring-woodhead-publishing-series-in-metals-and.pdf
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    • http://www.gorillawalker.com/competitive-equilibrium-theory-and-applications.pdf
    • http://www.gorillawalker.com/constantly-running.pdf
    • http://www.gorillawalker.com/total-gmat-math.pdf
    • http://www.gorillawalker.com/the-longshot-a-novel-paperback.pdf
    • http://www.gorillawalker.com/women-as-political-leaders-studies-in-gender-and-governing-leadership.pdf
    • http://www.gorillawalker.com/camiones-con-tr-iler-semitrucks-maquinas-maravillosas-mighty-machines-multilingual.pdf
    • http://www.gorillawalker.com/learn-chinese-through-songs-and-rhymes.pdf
    • http://www.gorillawalker.com/patio-walkway-ideas-that-work-taunton-s-ideas-that-work.pdf
    • http://www.gorillawalker.com/living-with-the-himalayan-masters.pdf
    • http://www.gorillawalker.com/out-of-the-ashes-ashes-series-1-mass-market-paperback.pdf
    • http://www.gorillawalker.com/alcohol-in-human-violence.pdf
    • http://www.gorillawalker.com/the-next-generation-of-distance-education-unconstrained-learning.pdf
    • http://www.gorillawalker.com/rediscover-jesus-an-invitation.pdf
    • http://www.gorillawalker.com/human-communication-in-society-3rd-edition.pdf
    • http://www.gorillawalker.com/advances-in-electrochemical-science-and-engineering-volume-7.pdf
    • http://www.gorillawalker.com/locating-michigan-s-old-canoe-portages.pdf
    • http://www.gorillawalker.com/60s-decorative-arts-a-source-book.pdf
    • http://www.gorillawalker.com/authorship-and-publicity-before-print-jean-gerson-and-the-transformation.pdf
    • http://www.gorillawalker.com/the-great-book-of-the-sea-a-complete-guide-to.pdf
    • http://www.gorillawalker.com/axial-flow-compressors.pdf
    • http://www.gorillawalker.com/business-cycles-and-unemployment-report-and-recommendations-of-a-committee.pdf
    • http://www.gorillawalker.com/home-mortgage-loan-processing-mortgage-lending-kindle-edition.pdf
    • http://www.gorillawalker.com/days-practical-photography-series-black-and-white-photography-craftsmanship-genuine.pdf
    • http://www.gorillawalker.com/which-equalities-matter.pdf
    • http://www.gorillawalker.com/still-life-photography-kindle-edition.pdf
    • http://www.gorillawalker.com/memoirs-of-robert-e-lee-his-military-and-personal-history.pdf
    • http://www.gorillawalker.com/darkness-accursed-volume-4-tp-darkness-top-cow.pdf
    • http://www.gorillawalker.com/thus-spoke-lachapelle.pdf
    • http://www.gorillawalker.com/discover-sharks-discover-animals.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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