Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8804b03304e5179…

MALICIOUS

PDF

43.1 KB Created: 2019-03-17 07:50:39 +03:00 Authoring application: www.freepdfconvert.com (via http://www.freepdfconvert.com)
MD5: 4c7543322b42c810a00ea7da3d12e249 SHA-1: 531ae2eebca6f6b33dda144e8fec230de6d0c7db SHA-256: e8804b03304e51793f5ba74d21f44aafd660a76b72bdb2cf8ed9d6f5a7087db6
90 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests the document is part of a link farm, likely designed to manipulate search engine rankings or distribute further malicious content. No scripts were extracted, and the document body was unreadable, but the sheer volume of links points to a malicious intent to redirect users. The ML classifier also flagged this PDF as malicious.

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/chick-napped-nancy-drew-and-the-clue-crew.pdf
    • http://www.gorillawalker.com/der-struwwelpeter-1858-manuskript-original-scan-german-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/my-first-science-book-explore-the-wonders-of-science-with.pdf
    • http://www.gorillawalker.com/gracie.pdf
    • http://www.gorillawalker.com/hinrich-annals-of-an-immigrant-family-1866-1913.pdf
    • http://www.gorillawalker.com/manufacturing-technologies-for-machines-of-the-future-21st-century-technologies.pdf
    • http://www.gorillawalker.com/ukrainian-conversational-learn-to-speak-and-understand-ukrainian-with-pimsleur.pdf
    • http://www.gorillawalker.com/living-druidry-magical-spirituality-for-the-wild-soul.pdf
    • http://www.gorillawalker.com/earthquake-science-and-seismic-risk-reduction-nato-science-series-iv.pdf
    • http://www.gorillawalker.com/how-to-compete-and-grow-a-sector-guide-to-policy.pdf
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    • http://www.gorillawalker.com/el-autob-s-m-gico-en-el-cuerpo-humano.pdf
    • http://www.gorillawalker.com/last-hurrah-of-the-james-younger-gang.pdf
    • http://www.gorillawalker.com/some-antioxidant-properties-of-chile-bulletin-new-mexico-state-university.pdf
    • http://www.gorillawalker.com/fear-the-boss-deadly-duet-book-1.pdf
    • http://www.gorillawalker.com/secret-coastline-journeys-and-discoveries-along-b-c-s-shores.pdf
    • http://www.gorillawalker.com/aviation-maintenance-technician-handbook-airframe-volume-2-faa-h-8083.pdf
    • http://www.gorillawalker.com/process-modelling-identification-and-control.pdf
    • http://www.gorillawalker.com/a-driving-test-quiz-tips.pdf
    • http://www.gorillawalker.com/eagles-calendar-2016-wall-calendars-animal-calendar-monthly-wall-calendar.pdf
    • http://www.gorillawalker.com/la-danza-en-venezuela-spanish-edition.pdf
    • http://www.gorillawalker.com/history-of-the-virginia-company-of-london-letters-to-and.pdf
    • http://www.gorillawalker.com/the-baby-in-bethlehem-a-christmas-carol-for-unison-or.pdf
    • http://www.gorillawalker.com/three-dialogues-revisited-samuel-beckett-today-les-trois-dialogues-revisit.pdf
    • http://www.gorillawalker.com/challenges-in-synthetic-organic-chemistry-international-series-of-monographs-on.pdf
    • http://www.gorillawalker.com/acls-for-experienced-providers-the-reference-textbook.pdf
    • http://www.gorillawalker.com/gingerbread-man-the-north-south-paperback.pdf
    • http://www.gorillawalker.com/gu-a-de-masaje-terap-utico-para-el-manejo-del.pdf
    • http://www.gorillawalker.com/the-purple-land-being-the-narrative-of-one-richard-lamb.pdf
    • http://www.gorillawalker.com/european-computer-law.pdf
    • http://www.gorillawalker.com/breakthroughs-for-bipolar-disorder-2nd-edition.pdf
    • http://www.gorillawalker.com/200-ideas-para-pintar-y-dibujar-art-ideas-spanish-edition.pdf
    • http://www.gorillawalker.com/music-city-babylon-19-95.pdf
    • http://www.gorillawalker.com/the-trillionaire.pdf
    • http://www.gorillawalker.com/freaks-eat-too-at-parties-kindle-edition.pdf
    • http://www.gorillawalker.com/just-henry-costa-book-award-children-s-book-award-kindle.pdf
    • http://www.gorillawalker.com/manufacturing-technologies-for-machines-of-the-future-21st-century-technolo
    • 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://www.freepdfconvert.com
    • 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#
    +1 more URL(s)

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