Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7ea0957a19422f2…

MALICIOUS

PDF

43.1 KB Created: 2018-11-23 21:03:40 +03:00 Authoring application: calibre 0.9.2 [http://calibre-ebook.com] (via PoDoFo - http://podofo.sf.net)
MD5: eefdbb3bf3e3f83c75c86d0e9caca64a SHA-1: 4b9c1908455c4f0aff8277a6586965ef52a7d2ee SHA-256: a7ea0957a19422f2a23b09922a38e48c332eb1a1f4f3717e01ffc11029093862
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute further malicious content. The document body is heavily obfuscated and does not provide clear textual lures, but the sheer volume of links suggests a malicious intent to redirect the user to potentially harmful resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8872

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/nonlinear-optical-properties-of-materials-springer-series-in-optical-sciences.pdf
    • http://www.gorillawalker.com/eigenfunction-expansions-for-families-of-commuting-operators-pitman-research-notes.pdf
    • http://www.gorillawalker.com/mango-mint-arabian-indian-and-north-african-inspired-vegan-cuisine.pdf
    • http://www.gorillawalker.com/what-can-i-bring-cookbook-cake-mix-doctor.pdf
    • http://www.gorillawalker.com/asking-for-it-the-alarming-rise-of-rape-cultureand-what.pdf
    • http://www.gorillawalker.com/flyfisher-s-chronicle-in-search-of-trout-and-other-fishes.pdf
    • http://www.gorillawalker.com/sweet-tooth-vol-4-endangered-species.pdf
    • http://www.gorillawalker.com/the-new-chicken-breast-cookbook.pdf
    • http://www.gorillawalker.com/a-history-of-war-in-100-battles.pdf
    • http://www.gorillawalker.com/the-rogatory-commission-1949.pdf
    • http://www.gorillawalker.com/high-performance-jeep-wrangler-tj-builder-s-guide-1997-2006.pdf
    • http://www.gorillawalker.com/make-a-movie-find-your-talent.pdf
    • http://www.gorillawalker.com/education-and-modern-spiritual-life.pdf
    • http://www.gorillawalker.com/peripheral-nerve-disorders-chapter-97-of-emergency-medicine-kindle-edition.pdf
    • http://www.gorillawalker.com/tough-questions-leader-s-guide.pdf
    • http://www.gorillawalker.com/arbeits-und-bungsbuch-wirtschaftsmathematik-beispiele-aufgaben-formeln-studienb-cher-wirtschaftsmathematik.pdf
    • http://www.gorillawalker.com/fish-animal-babies-heinemann-library-hardcover.pdf
    • http://www.gorillawalker.com/psychology-of-emotion-interpersonal-experiential-and-cognitive-approaches-principles-of.pdf
    • http://www.gorillawalker.com/a-world-of-contradictions-the-indus-valley-culture.pdf
    • http://www.gorillawalker.com/all-age-lectionary-services-year-b.pdf
    • http://www.gorillawalker.com/curing-the-postmodern-blues-reading-grant-morrison-and-chris-weston.pdf
    • http://www.gorillawalker.com/joel-whitburn-s-top-adult-contemporary-1961-1993-billboard.pdf
    • http://www.gorillawalker.com/fractal-based-image-compression-ii.pdf
    • http://www.gorillawalker.com/contract-contagion-from-biopolitics-to-oikonomia.pdf
    • http://www.gorillawalker.com/the-qualinesti-dragonlance-elven-nations-vol-3.pdf
    • http://www.gorillawalker.com/polya-counting-theory-combinatorics-for-computer-science.pdf
    • http://www.gorillawalker.com/seguir-sin-ti-spanish-edition.pdf
    • http://www.gorillawalker.com/embryology-for-surgeons.pdf
    • http://www.gorillawalker.com/a-parent-s-guide-to-eating-disorders-and-obesity-the.pdf
    • http://www.gorillawalker.com/fifty-famous-people-a-book-of-short-stories-primary-source.pdf
    • http://www.gorillawalker.com/black-and-honolulu-blue-in-the-trenches-of-the-nfl.pdf
    • http://www.gorillawalker.com/the-theology-of-the-passion-of-the-christ.pdf
    • http://www.gorillawalker.com/insect-viruses-and-pest-management.pdf
    • http://www.gorillawalker.com/the-church-in-the-theological-writings-of-avery-dulles-impulses.pdf
    • http://www.gorillawalker.com/tom-s-letters-the-private-world-of-thomas-king-victorian.pdf
    • http://www.gorillawalker.com/political-philosophy-dimensions-of-philosophy.pdf
    • http://www.gorillawalker.com/man-in-the-woods-a-novel.pdf
    • http://www.gorillawalker.com/research-methods-for-criminal-justice-and-criminology-ise.pdf
    • http://www.gorillawalker.com/strengthening-national-food-control-systems-a-quick-guide-to-assess.pdf
    • http://www.gorillawalker.com/read-and-share-the-ultimate-dvd-bible-volume-2.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://calibre-ebook.com
    • http://ns.adobe.com/pdf/1.3/
    • http://podofo.sf.net
    • 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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