Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fff590232d71bab…

MALICIOUS

PDF

31.3 KB Created: 2019-07-20 19:55:44 +03:00 Authoring application: pdfFactory Pro www.pdffactory.com (via pdfFactory Pro 4.05 (Windows 7 Home Basic x86 Russian))
MD5: 2bc83173774f182b53a930f82e0f07d3 SHA-1: 49d4a1f42ffff16a336c6aad95e48129b5e6fdba SHA-256: 7fff590232d71bab222701b610272f823ca5a5e5d13763c39962021c01fa289a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The critical PDF_SEO_LINK_FARM heuristic indicates the presence of a large number of external links within the PDF, all pointing to the same domain. This suggests a tactic to manipulate search engine results or to distribute a large volume of content, potentially malicious. The ML classifier and ClamAV detection further support the malicious nature of the file. No scripts were extracted, and the document body was unreadable, so the primary attack pattern is inferred from the link farm heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8318

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-7099134-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7099134-0
  • 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/wie-sie-als-tagesmutter-in-einer-gro-tagespflegestelle-t-tig.pdf
    • http://www.gorillawalker.com/christmas-decorations-from-williamsburg.pdf
    • http://www.gorillawalker.com/mermaid-saga-vol-3.pdf
    • http://www.gorillawalker.com/when-you-suffer-biblical-keys-to-unlock-the-mystery.pdf
    • http://www.gorillawalker.com/nothing-to-fear-jesus-walks-on-water-me-too-readers.pdf
    • http://www.gorillawalker.com/savage-girls-and-wild-boys-a-history-of-feral-children.pdf
    • http://www.gorillawalker.com/beyond-horse-massage-a-breakthrough-interactive-method-for-alleviating-soreness.pdf
    • http://www.gorillawalker.com/think-again-contrarian-reflections-on-life-culture-politics-religion-law.pdf
    • http://www.gorillawalker.com/ergonomic-and-safety-climate-evaluation-at-a-brewery-colorado-health.pdf
    • http://www.gorillawalker.com/insider-s-guide-act-2nd-ed.pdf
    • http://www.gorillawalker.com/the-prayer-factor.pdf
    • http://www.gorillawalker.com/tikki-tikki-tembo-spanish.pdf
    • http://www.gorillawalker.com/william-whiteway-of-dorchester.pdf
    • http://www.gorillawalker.com/soul-catcher.pdf
    • http://www.gorillawalker.com/to-the-ends-of-the-earth-100-maps-that-changed.pdf
    • http://www.gorillawalker.com/hypnosis.pdf
    • http://www.gorillawalker.com/baby-dance-harper-growing-tree.pdf
    • http://www.gorillawalker.com/bloodborne-vampiress-thrillogy-book-1-kindle-edition.pdf
    • http://www.gorillawalker.com/popular-potato-recipes.pdf
    • http://www.gorillawalker.com/riven-the-arinthian-line-book-2-kindle-edition.pdf
    • http://www.gorillawalker.com/2-portraits-op-5-trumpet-1-and-2-parts-qty.pdf
    • http://www.gorillawalker.com/the-gerard-edery-sephardic-songbook-for-voice-and-guitar.pdf
    • http://www.gorillawalker.com/initiation-bonfire-chronicles-prequel-1-kindle-edition.pdf
    • http://www.gorillawalker.com/early-years-educator-cache-child-care-and-education.pdf
    • http://www.gorillawalker.com/pharmaceutical-biotechnology.pdf
    • http://www.gorillawalker.com/when-love-calls-a-novel-the-gregory-sisters.pdf
    • http://www.gorillawalker.com/dragons-mythologies.pdf
    • http://www.gorillawalker.com/boy.pdf
    • http://www.gorillawalker.com/woe-unto-death.pdf
    • http://www.gorillawalker.com/mycenae-a-guide-to-its-ruins-and-history-ekdotike-athenon.pdf
    • http://www.gorillawalker.com/writing-meaningful-teacher-evaluations-right-now-the-principal-s-quick.pdf
    • http://www.gorillawalker.com/permissible-dose-a-history-of-radiation-protection-in-the-twentieth.pdf
    • http://www.gorillawalker.com/policy-analysis-concepts-and-practice-4th-edition.pdf
    • http://www.gorillawalker.com/a-birthday-for-ben-children-with-hearing-difficulty-moonbeam-childrens.pdf
    • http://www.gorillawalker.com/africa-grades-5-8.pdf
    • http://www.gorillawalker.com/beyond-the-hype-illusion-and-reality-in-real-estate-sales.pdf
    • http://www.gorillawalker.com/la-ciudad-maya-un-escenario-sagrado-the-mayan-city-a.pdf
    • http://www.gorillawalker.com/a-lifetime-in-the-eye-of-the-storm.pdf
    • http://www.gorillawalker.com/safe-at-home.pdf
    • http://www.gorillawalker.com/workbook-for-tonal-harmony-with-an-introduction-to-twentieth-century.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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