Malicious PDF — malware analysis report

Static analysis result for SHA-256 418ad94261dc1fa0…

MALICIOUS

PDF

41.8 KB Created: 2018-12-15 20:01:28 +03:00 Authoring application: Acrobat PDFMaker 9.0 for Word (via Acrobat Distiller 9.0.0 (Windows))
MD5: 38842ade9bb634e4c8c31481a2d8c2a0 SHA-1: 7ef19fff1ac2177035d07ea5be2a8a95a8da7745 SHA-256: 418ad94261dc1fa084867d08cf5969495b5d4deced01d3092ed207c83516d111
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier as malicious and contains a large number of embedded links to external PDF files hosted on 'gorillawalker.com'. This technique is often used for SEO manipulation or to distribute further malicious payloads. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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/bird-after-bird.pdf
    • http://www.gorillawalker.com/matkakuvia-kainuusta-ja-lapista-finnish-edition.pdf
    • http://www.gorillawalker.com/quick-changeover-for-operators-learning-package-quick-changeover-for-operators.pdf
    • http://www.gorillawalker.com/journal-of-vertebrate-paleontology-10-3-special-issue-50th-anniversary.pdf
    • http://www.gorillawalker.com/the-strength-of-his-hand-chronicles-of-the-kings-3.pdf
    • http://www.gorillawalker.com/la-casa-de-las-hermanas-best-seller-spanish-edition.pdf
    • http://www.gorillawalker.com/lost-works-of-isambard-kingdom-brunel-the.pdf
    • http://www.gorillawalker.com/guide-my-feet-ministry-transformed-through-mentoring.pdf
    • http://www.gorillawalker.com/hildebrand-s-travel-map-united-arab-emirates-oman-hildebrand-s.pdf
    • http://www.gorillawalker.com/women-and-discourse-in-the-fiction-of-marguerite-duras-love.pdf
    • http://www.gorillawalker.com/the-globalisation-of-love.pdf
    • http://www.gorillawalker.com/getting-it-across-a-guide-to-effective-academic-writing.pdf
    • http://www.gorillawalker.com/ofendida-rendici.pdf
    • http://www.gorillawalker.com/eucharist-celebrating-its-rhythms-in-our-lives.pdf
    • http://www.gorillawalker.com/the-illustrated-encyclopaedia-of-epilepsy.pdf
    • http://www.gorillawalker.com/poems-from-guantanamo-the-detainees-speak.pdf
    • http://www.gorillawalker.com/akbar-and-birbal.pdf
    • http://www.gorillawalker.com/law-of-the-jungle-hardy-boys-case-file-105-hardy.pdf
    • http://www.gorillawalker.com/dive-to-adventure-exploring-the-world-s-best-known-wrecks.pdf
    • http://www.gorillawalker.com/el-camino-de-santiago-en-mountain-bike-st-james-way.pdf
    • http://www.gorillawalker.com/u-s-army-technical-manual-tm-3-4240-264-34.pdf
    • http://www.gorillawalker.com/the-winter-long-october-daye-series.pdf
    • http://www.gorillawalker.com/united-moon-colonies-kindle-edition.pdf
    • http://www.gorillawalker.com/microstrip-antennas-antenna-library.pdf
    • http://www.gorillawalker.com/bob-dylan-the-gig-book.pdf
    • http://www.gorillawalker.com/the-art-of-sexual-ecstasy-the-path-of-sacred-sexuality.pdf
    • http://www.gorillawalker.com/mcdougal-littell-concepts-skills-eedition-cd-rom-algebra-1-2004.pdf
    • http://www.gorillawalker.com/lydia-a-novel.pdf
    • http://www.gorillawalker.com/moon-handbooks-canadian-rockies-including-banff-and-jasper-national-parks.pdf
    • http://www.gorillawalker.com/caroline-takes-a-chance-american-girl-quality.pdf
    • http://www.gorillawalker.com/aaa-essential-guide-antwerp-aaa-essential-guides.pdf
    • http://www.gorillawalker.com/mp-3-with-cdrom-pc-users-la-computacion-que-entienden.pdf
    • http://www.gorillawalker.com/the-right-to-green-hands-on-urbanism-1850-2012.pdf
    • http://www.gorillawalker.com/jak-and-daxter-the-precursor-legacy-prima-s-official-strategy.pdf
    • http://www.gorillawalker.com/golden-dreams-kindle-edition.pdf
    • http://www.gorillawalker.com/hockey-s-heroes-1994-year-in-sports-1994.pdf
    • http://www.gorillawalker.com/trout-bum-the-pruett-series.pdf
    • http://www.gorillawalker.com/parenting-without-stress-how-to-raise-responsible-kids-while-keeping.pdf
    • http://www.gorillawalker.com/church-papacy-and-schism-a-theological-enquiry.pdf
    • http://www.gorillawalker.com/transactions-of-the-royal-society-of-tropical-medicine-hygiene-vol.pdf
    • http://www.gorillaw
    • 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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