Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f52d373a3a0666c…

MALICIOUS

PDF

42.8 KB Created: 2018-12-15 08:32:23 +03:00 Authoring application: PScript5.dll Version 5.2 (via GPL Ghostscript 8.15)
MD5: 66a19fe84c1f5d15e7e2778354d38691 SHA-1: 1913e1a2b198dad0a833e347694b14d7fa03cf65 SHA-256: 9f52d373a3a0666c4221d163814782975d3081eb8eb78406053b3d74263e2578
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains a large number of external links, indicating a potential SEO poisoning or link farm attack. The presence of embedded URLs and the sheer volume of links suggest an attempt to drive traffic or distribute further malicious content. No scripts were extracted from this sample.

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/grand-meaulnes.pdf
    • http://www.gorillawalker.com/hiding-in-plain-sight.pdf
    • http://www.gorillawalker.com/ielts-the-complete-guide-to-task-1-writing.pdf
    • http://www.gorillawalker.com/cuckolded-at-the-college-reunion-kindle-edition.pdf
    • http://www.gorillawalker.com/in-the-heart-of-the-sea-the-tragedy-of-the.pdf
    • http://www.gorillawalker.com/opto-mechanical-systems-design-volume-2-design-and-analysis-of.pdf
    • http://www.gorillawalker.com/luba-the-angel-of-bergen-belsen-jane-addams-honor-book.pdf
    • http://www.gorillawalker.com/1356-a-novel.pdf
    • http://www.gorillawalker.com/born-to-belonging-writings-on-spirit-and-justice.pdf
    • http://www.gorillawalker.com/the-talisman-conductor-score-eighth-note-publications.pdf
    • http://www.gorillawalker.com/one-in-ten-is-thankful-jesus-cured-10-lepers-only.pdf
    • http://www.gorillawalker.com/your-guide-to-bodywork-a-comprehensive-guide-to-repair-and.pdf
    • http://www.gorillawalker.com/babylonian-boundary-stones-and-memorial-tablets-in-the-british-museum.pdf
    • http://www.gorillawalker.com/leading-from-the-center-strengthening-the-pillars-of-the-church.pdf
    • http://www.gorillawalker.com/kindergarten-sight-words-level-2-a-kindergarten-sight-word-book.pdf
    • http://www.gorillawalker.com/in-the-eagle-s-shadow-the-united-states-and-latin.pdf
    • http://www.gorillawalker.com/monza-stories-of-men-and-cars.pdf
    • http://www.gorillawalker.com/adorable-nicaragua-hardcover.pdf
    • http://www.gorillawalker.com/at-home-in-the-cosmos.pdf
    • http://www.gorillawalker.com/intro-to-japanese-grammar-comm.pdf
    • http://www.gorillawalker.com/the-collected-works-of-mary-sidney-herbert-countess-of-pembroke.pdf
    • http://www.gorillawalker.com/oprah-winfrey-i-dont-believe-in-failure-african-american-biographies.pdf
    • http://www.gorillawalker.com/a-da-act-ii-scena-salvatore-della-patria-bassoon-1.pdf
    • http://www.gorillawalker.com/by-ralph-j-murphy-murphy-s-laws-of-songwriting-1st.pdf
    • http://www.gorillawalker.com/the-universal-force-volume-1-derived-from-a-more-perfect.pdf
    • http://www.gorillawalker.com/foundation-of-green-it-consolidation-virtualization-efficiency-and-roi-in.pdf
    • http://www.gorillawalker.com/real-house-ideas-the-ultimate-house-ideas-guide-building-the.pdf
    • http://www.gorillawalker.com/my-hungry-hell-what-it-s-really-like-to-be.pdf
    • http://www.gorillawalker.com/a1-toefl-listening-ibt-korean-edition.pdf
    • http://www.gorillawalker.com/lytton-strachey-by-himself-a-self-portrait.pdf
    • http://www.gorillawalker.com/manual-ilustrado-de-terapia-sexual-the-illustrated-manual-of-sex.pdf
    • http://www.gorillawalker.com/introduction-to-electronics-4th-edition.pdf
    • http://www.gorillawalker.com/mechanisms-of-disease-in-small-animal-surgery.pdf
    • http://www.gorillawalker.com/baby-animals-volume-1-explore-series-explore-series-books-for.pdf
    • http://www.gorillawalker.com/arbitration-2008-arbitration-proceedings-of-the-annual-meeting-of-the.pdf
    • http://www.gorillawalker.com/holt-mcdougal-world-regions-student-edition-grades-6-8-the.pdf
    • http://www.gorillawalker.com/cake-first-step-nonfiction-changing-forms.pdf
    • http://www.gorillawalker.com/building-a-new-church-a-process-manual-for-pastors-and.pdf
    • http://www.gorillawalker.com/best-plays-advanced.pdf
    • http://www.gorillawalker.com/tibetan-astrology-the-astrology-and-geomancy-of-tibet.pdf
    • http://www.gorillawalker.com/born-
    • 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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