Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b528149c7da2fbd…

MALICIOUS

PDF

31.3 KB Created: 2020-01-17 19:19:44 +03:00 Authoring application: Adobe Acrobat 8.0 Combine Files (via Adobe Acrobat 8.0)
MD5: 123607d40daf0ce48e07e70e0dd8bc1d SHA-1: 4ec4d0507c8171315834e91dfb8f74566215aea6 SHA-256: 1b528149c7da2fbd51c18efa5c2c0d3b7d9b760e3be1626f6e66d718bf5e7060
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a critical heuristic for containing a large number of external links, suggesting a link farm or SEO manipulation tactic. The ML classifier also indicated a high probability of maliciousness. While no scripts were extracted, the sheer volume of embedded URLs points towards an attempt to either distribute further malicious content or engage in search engine poisoning.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8447

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/the-atlas-of-israel-cartography-physical-and-human-geography.pdf
    • http://www.gorillawalker.com/the-noisy-oscillator-the-first-hundred-years-from-einstein-until.pdf
    • http://www.gorillawalker.com/america-in-the-1940-s-1940-s-famous-headlines-sports.pdf
    • http://www.gorillawalker.com/hornli.pdf
    • http://www.gorillawalker.com/superimmunity.pdf
    • http://www.gorillawalker.com/the-first-casualty.pdf
    • http://www.gorillawalker.com/knowledge-works-managing-intellectual-capital-at-toshiba-japan-business-economics.pdf
    • http://www.gorillawalker.com/atlas-of-bulgarian-endemic-plants.pdf
    • http://www.gorillawalker.com/rompiendo-el-molde-la-historia-de-bono-especialidades-juveniles-spanish.pdf
    • http://www.gorillawalker.com/all-for-owen-kindle-edition.pdf
    • http://www.gorillawalker.com/mcdougal-littell-en-espanol-level-2-pupil-edition-en-espa.pdf
    • http://www.gorillawalker.com/roche-abbey-english-heritage-red-guides.pdf
    • http://www.gorillawalker.com/pyrenees-pays-basque-est-baretons-soule-basse-navarre-no-2.pdf
    • http://www.gorillawalker.com/the-calcium-connection-a-revolutionary-diet-and-health-program-to.pdf
    • http://www.gorillawalker.com/managing-and-preventing-arthritis-the-natural-alternatives.pdf
    • http://www.gorillawalker.com/mining-the-sky-untold-riches-from-the-asteroids-comets-and.pdf
    • http://www.gorillawalker.com/black-womanist-leadership-tracing-the-motherline.pdf
    • http://www.gorillawalker.com/scattered-suns-the-saga-of-seven-suns-book-4.pdf
    • http://www.gorillawalker.com/panel-discussion-food-industry-profits.pdf
    • http://www.gorillawalker.com/11905-portraits-for-classroom-bulletin-boards-artists-portraits-for-classroom.pdf
    • http://www.gorillawalker.com/clash-8-cultural-conflicts-that-make-us-who-we-are.pdf
    • http://www.gorillawalker.com/pakistan-s-future-and-u-s-policy-options-csis-reports.pdf
    • http://www.gorillawalker.com/rick-steves-mona-winks-self-guided-tours-of-europe-s.pdf
    • http://www.gorillawalker.com/the-prince-highbridge-classics.pdf
    • http://www.gorillawalker.com/great-source-mathstart-student-reader-super-sand-castle-saturday-measuring.pdf
    • http://www.gorillawalker.com/journey-to-data-quality.pdf
    • http://www.gorillawalker.com/cavalli-conoscere-riconoscere-e-allevare-tutte-le-razze-pi-note.pdf
    • http://www.gorillawalker.com/corvette-1963-83-chilton-s-repair-tune-up-guides.pdf
    • http://www.gorillawalker.com/the-healing-buddha-revised-edition.pdf
    • http://www.gorillawalker.com/trastornos-del-sueno-sleep-disorders-diganosticos-y-tratamientos-diagnosis-and.pdf
    • http://www.gorillawalker.com/patterns-of-the-hypnosis-techniques-of-milton-h-erickson-volume.pdf
    • http://www.gorillawalker.com/us-army-ah-1-cobra-units-in-vietnam-combat-aircraft.pdf
    • http://www.gorillawalker.com/bailar-el-deporte-y-mi-cuerpo-spanish-edition.pdf
    • http://www.gorillawalker.com/swedish-crime-fiction-the-making-of-nordic-noir.pdf
    • http://www.gorillawalker.com/wasted-the-incredible-true-story-of-cricket-s-first-rock.pdf
    • http://www.gorillawalker.com/101ways-to-make-every-second-count.pdf
    • http://www.gorillawalker.com/off-the-main-track.pdf
    • http://www.gorillawalker.com/fear-and-loathing-in-america-the-brutal-odyssey-of-an.pdf
    • http://www.gorillawalker.com/razdelennaia-bol-russian-edition.pdf
    • http://www.gorillawalker.com/russell-s-unknown-logicism-a-study-in-the-history-and.pdf
    • http://www.gorillawalker.com/roche-abbey
    • 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/

Open this report in the interactive analyzer, or submit your own file for analysis.