Malicious PDF — malware analysis report

Static analysis result for SHA-256 748db722ad66047a…

MALICIOUS

PDF

43.8 KB Created: 2019-04-28 07:37:17 +03:00 Authoring application: pdfFactory Pro www.pdffactory.com (via pdfFactory Pro 4.05 (Windows 7 Home Basic x86 Russian))
MD5: 00109fe395d71215587cd9f6610c2f56 SHA-1: 91f56db6450b667d459434448c0044a4a349bf40 SHA-256: 748db722ad66047a180cd7161bb345bd9295cc6b38c1bb12a1e4b799cdf2c503
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which suggests an attempt to drive traffic to external resources. The ML classifier also flagged the document as malicious. While no scripts were extracted, the sheer volume of links points to a content-driven lure, likely to distribute further malicious content or engage in SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9171

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/a-greek-english-lexicon-of-the-new-testament-and-other.pdf
    • http://www.gorillawalker.com/practical-analysis-of-flavor-and-fragrance-materials.pdf
    • http://www.gorillawalker.com/discrete-time-signal-processing.pdf
    • http://www.gorillawalker.com/aspects-of-signal-processing-with-emphasis-on-underwater-acoustics-part.pdf
    • http://www.gorillawalker.com/stedmans-radiology-words-includes-nuclear-medicine-other-imaging-5th-edition.pdf
    • http://www.gorillawalker.com/the-death-of-william-gooch-a-history-s-anthropology.pdf
    • http://www.gorillawalker.com/futa-struts-her-stuff-futanari-cheerleaders-4-futa-on-female.pdf
    • http://www.gorillawalker.com/keeper-of-the-hate.pdf
    • http://www.gorillawalker.com/hydrogen-bonding-new-insights-challenges-and-advances-in-computational-chemistry.pdf
    • http://www.gorillawalker.com/the-post-petroleum-survival-guide-and-cookbook-recipes-for-changing.pdf
    • http://www.gorillawalker.com/her-guardian-angel.pdf
    • http://www.gorillawalker.com/letterland-cookbook-an-alphabet-of-recipes-letterland-activity-books.pdf
    • http://www.gorillawalker.com/appalachian-carols-no-4-go-tell-it-on-the-mountain.pdf
    • http://www.gorillawalker.com/a-first-course-in-asymptotic-theory-of-statistics.pdf
    • http://www.gorillawalker.com/rayqelle-s-revenge-book-1-jp4-ratchet.pdf
    • http://www.gorillawalker.com/neuroendocrine-tumours-diagnosis-and-management.pdf
    • http://www.gorillawalker.com/integrated-radiography-workbook.pdf
    • http://www.gorillawalker.com/nutritious-smoothie-recipes-90-smoothies-for-weight-loss-detoxification-glowing.pdf
    • http://www.gorillawalker.com/bulletproof-saxophone-playing-kindle-edition.pdf
    • http://www.gorillawalker.com/flowers-on-the-wall.pdf
    • http://www.gorillawalker.com/manual-of-microsurgery-on-the-laboratory-rat-part-1-general.pdf
    • http://www.gorillawalker.com/new-directions-in-supply-chain-management-technology-strategy-and-implementation.pdf
    • http://www.gorillawalker.com/the-christian-s-travel-journal-for-italy.pdf
    • http://www.gorillawalker.com/measurement-uncertainty-and-probability.pdf
    • http://www.gorillawalker.com/the-battle-of-vimy-ridge-defining-moments-in-canadian-history.pdf
    • http://www.gorillawalker.com/acing-the-college-application-how-to-maximize-your-chances-for.pdf
    • http://www.gorillawalker.com/girl-on-girl-smut-a-collection-of-hardcore-lesbian-erotica.pdf
    • http://www.gorillawalker.com/the-negev.pdf
    • http://www.gorillawalker.com/african-american-religion-a-checklist-of-books-in-the-billy.pdf
    • http://www.gorillawalker.com/aids-memoir-journal-of-an-hiv-positive-mother.pdf
    • http://www.gorillawalker.com/analyse-linguistique-de-la-langue-fran-aise.pdf
    • http://www.gorillawalker.com/clipped-by-love-bellevue-bullies-book-2-kindle-edition.pdf
    • http://www.gorillawalker.com/keep-calm-you-re-only-21.pdf
    • http://www.gorillawalker.com/wonder-tales-six-french-stories-of-enchantment.pdf
    • http://www.gorillawalker.com/how-to-understand-auto-racing.pdf
    • http://www.gorillawalker.com/london-bus-handbook-2002.pdf
    • http://www.gorillawalker.com/a-nation-of-moochers-america-s-addiction-to-getting-something.pdf
    • http://www.gorillawalker.com/the-complete-mushroom-hunter-an-illustrated-guide-to-finding-harvesting.pdf
    • http://www.gorillawalker.com/finn-aagaard-selected-works.pdf
    • http://www.gorillawalker.com/a-dangerous-engine-benjamin-franklin-from-scientist-to-diplomat-frances.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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