Malicious PDF — malware analysis report

Static analysis result for SHA-256 dca8dd241c135084…

MALICIOUS

PDF

45.4 KB Created: 2018-12-02 10:56:04 +03:00 Authoring application: Sejda (Ver. 1.0.0.M6-SNAPSHOT) (via iText 2.1.7 by 1T3XT)
MD5: 1fdd35f5ced8791fbe6753c192240ffa SHA-1: bf76785b167921f110c105de25b2358eb6cfb5dd SHA-256: dca8dd241c13508461820b3805d816b0470c40eaa2781842a442874c9de2ae65
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded URLs pointing to external PDF documents, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document with high confidence. No scripts were extracted from this sample. The primary attack pattern appears to be a link farm designed to distribute traffic or potentially host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8640

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/industry-and-air-power-the-expansion-of-british-aircraft-production.pdf
    • http://www.gorillawalker.com/hagamos-de-cuenta-hablemos-spanish-edition.pdf
    • http://www.gorillawalker.com/polish-cooking-revised.pdf
    • http://www.gorillawalker.com/robert-duncan-the-collected-later-poems-and-plays-the-collected.pdf
    • http://www.gorillawalker.com/harry-smith-the-avant-garde-in-the-american-vernacular-issues.pdf
    • http://www.gorillawalker.com/sabah-travel-map-2nd-edition-malaysia-regional-maps.pdf
    • http://www.gorillawalker.com/shen-pu-hai-a-chinese-political-philosopher-of-the-fourth.pdf
    • http://www.gorillawalker.com/housing-land-and-property-rights-in-post-conflict-united-nations.pdf
    • http://www.gorillawalker.com/trial-techniques-and-trials-ninth-edition-aspen-coursebooks-kindle-edition.pdf
    • http://www.gorillawalker.com/new-cardiovascular-drugs-1985-new-cardiovascular-drugs-vol-3.pdf
    • http://www.gorillawalker.com/mathematics-applications-and-concepts-course-1-student-edition-glencoe-mathematics.pdf
    • http://www.gorillawalker.com/dawn-of-the-electronic-age-electrical-technologies-in-the-shaping.pdf
    • http://www.gorillawalker.com/the-kuzari-an-argument-for-the-faith-of-israel-schocken.pdf
    • http://www.gorillawalker.com/handbook-on-thriving-as-an-adoptive-family-real-life-solutions.pdf
    • http://www.gorillawalker.com/erste-reise-nach-dem-no-136-rdlichen-amerika-in-den.pdf
    • http://www.gorillawalker.com/united-states-reports-cases-adjudged-in-the-supreme-court-at.pdf
    • http://www.gorillawalker.com/the-sexual-contract.pdf
    • http://www.gorillawalker.com/lexico-de-filosofia-lexico-philosophy-diccionarios-para-la-ensenanza-spanish.pdf
    • http://www.gorillawalker.com/modernism-and-literature-an-introduction-and-reader.pdf
    • http://www.gorillawalker.com/elements-of-petroleum-processing.pdf
    • http://www.gorillawalker.com/noncystimorph-colonial-rugose-corals-of-the-onesquethaw-and-lower-cazenovia.pdf
    • http://www.gorillawalker.com/differentiation-of-enantiomers-ii-topics-in-current-chemistry.pdf
    • http://www.gorillawalker.com/invasion-rabaul-the-epic-story-of-lark-force-the-forgotten.pdf
    • http://www.gorillawalker.com/on-methods-volume-1-books-i-ii-the-i-tatti.pdf
    • http://www.gorillawalker.com/expedition-to-disaster.pdf
    • http://www.gorillawalker.com/lonely-planet-iran-country-travel-guide-by-andrew-burke-mark.pdf
    • http://www.gorillawalker.com/the-best-american-short-plays-2001-2002.pdf
    • http://www.gorillawalker.com/chinese-american-portraits.pdf
    • http://www.gorillawalker.com/fundamentals-of-semiconductors-physics-and-materials-properties-advanced-texts-in.pdf
    • http://www.gorillawalker.com/spawn-42-fanboy-image-comics.pdf
    • http://www.gorillawalker.com/pomona-a-to-z.pdf
    • http://www.gorillawalker.com/basic-genetics-textbook-and-activities.pdf
    • http://www.gorillawalker.com/blue-collar-aristocrats-life-styles-at-a-working-class-tavern.pdf
    • http://www.gorillawalker.com/clep-introductory-psychology-exam-flashcard-study-system-clep-test-practice.pdf
    • http://www.gorillawalker.com/the-royal-palaces-of-india.pdf
    • http://www.gorillawalker.com/coping-in-a-single-parent-home.pdf
    • http://www.gorillawalker.com/manual-of-the-law-of-evidence.pdf
    • http://www.gorillawalker.com/vitamin-k2-understanding-how-a-little-known-vitamin-impacts-your.pdf
    • http://www.gorillawalker.com/carl-fischer-my-first-arban-book-for-french-horn.pdf
    • http://www.gorillawalker.com/essays-on-cultural-transmission-lse-econ-monograph-social-anthropology.pdf
    • http://www.gorillawalker.com/shen-pu-hai-a-chinese-polit
    • 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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