Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f9123b7463c9ff6…

MALICIOUS

PDF

42.7 KB Created: 2018-11-14 08:38:50 +03:00 Authoring application: Adobe PageMaker 7.0 (via Acrobat Distiller 5.0.5 (Windows))
MD5: cbca5917e1969bbc82bc085bdc0c6d9b SHA-1: f1ed8323a6901a828c5e74abb146c7917cd3a1bc SHA-256: 5f9123b7463c9ff6039a2939882486ce0e611f919c6ccaa3cbeb0743800da0e5
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. While no specific script was analyzed in detail, the presence of embedded JavaScript and the overall structure strongly suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8698

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/i-want-to-be-little-princess.pdf
    • http://www.gorillawalker.com/penguin-guide-to-the-superstitions-of-britain-and-ireland.pdf
    • http://www.gorillawalker.com/thirty-mellow-dious-studies-vol-2-bass-clef-volume-2.pdf
    • http://www.gorillawalker.com/aplia-online-access-code-to-accompany-brief-principles-of-macroeconomics.pdf
    • http://www.gorillawalker.com/understanding-biophotonics-fundamentals-advances-and-applications.pdf
    • http://www.gorillawalker.com/the-beach-an-illustrated-history-from-the-lake-to-kingston.pdf
    • http://www.gorillawalker.com/the-dog-lover-s-companion-to-california-dog-lovers-companion.pdf
    • http://www.gorillawalker.com/does-a-wild-bear-chip-in-the-woods-lewis-grizzard.pdf
    • http://www.gorillawalker.com/applications-of-epidemiological-models-to-public-health-policymaking.pdf
    • http://www.gorillawalker.com/the-new-ball-volume-three-unlimited-overs.pdf
    • http://www.gorillawalker.com/plague-and-the-athenian-imagination-drama-history-and-the-cult.pdf
    • http://www.gorillawalker.com/panorama-francophone-student-book-1-ib-diploma-french-edition.pdf
    • http://www.gorillawalker.com/the-modern-mercenary-private-armies-and-what-they-mean-for.pdf
    • http://www.gorillawalker.com/777-greek-islands-colour-guides-greece.pdf
    • http://www.gorillawalker.com/wordpress-visual-quickstart-guide-3rd-edition.pdf
    • http://www.gorillawalker.com/hello-summer-goodbye.pdf
    • http://www.gorillawalker.com/treatise-on-invertebrate-paleontology-part-v-graptolithina-with-sections-on.pdf
    • http://www.gorillawalker.com/ah-blue-bird-contemporary-writers.pdf
    • http://www.gorillawalker.com/de-niro-a-life-unabridged-audible-audio-edition.pdf
    • http://www.gorillawalker.com/el-mundo-secreto-de-walter-mercado-spanish-edition.pdf
    • http://www.gorillawalker.com/public-relations-strategies-and-tactics-9th-edition.pdf
    • http://www.gorillawalker.com/spiritual-warrior-iii-solace-for-the-heart-in-difficult-times.pdf
    • http://www.gorillawalker.com/sociolog-a-del-cante-flamenco-spanish-edition.pdf
    • http://www.gorillawalker.com/2-x-2-boo-a-set-of-spooky-multiplication-stories.pdf
    • http://www.gorillawalker.com/paddles-in-paradise-a-guide-to-casual-kayaking-and-canoeing.pdf
    • http://www.gorillawalker.com/beach-feet-being-in-the-world.pdf
    • http://www.gorillawalker.com/conceptual-still-life-photography.pdf
    • http://www.gorillawalker.com/paleo-slow-cooker-60-easy-and-delicious-gluten-free-paleo.pdf
    • http://www.gorillawalker.com/heuristics-and-biases-the-psychology-of-intuitive-judgment.pdf
    • http://www.gorillawalker.com/persistence-and-change-in-rural-communities-a-fifty-year-follow.pdf
    • http://www.gorillawalker.com/transworld-snowboarding-magazine-multiple-issues-1999.pdf
    • http://www.gorillawalker.com/religious-and-philosohical-aspects-of-the-laozi-s-u-n.pdf
    • http://www.gorillawalker.com/catch-a-wave-the-rise-fall-and-redemption-of-the.pdf
    • http://www.gorillawalker.com/gender-law-5th-fifth-edition-byrhode.pdf
    • http://www.gorillawalker.com/studies-in-combinatorics-maa-studies-in-mathematics.pdf
    • http://www.gorillawalker.com/1100-words-you-need-to-know.pdf
    • http://www.gorillawalker.com/fiction-a-pocket-anthology-7th-edition.pdf
    • http://www.gorillawalker.com/trouble-at-the-double-ll-ranch-saving-katy-marie-kansas.pdf
    • http://www.gorillawalker.com/quotes-quotables-in-a-jar.pdf
    • http://www.gorillawalker.com/immortal-victory-the-judas-chronicles-book-7.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000174b.js
78dbe50ed2180ee14f753d96381a85beab74466efac1dae51619d80576681314		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x174B 34196 bytes

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