Malicious PDF — malware analysis report

Static analysis result for SHA-256 e41f0da5461dd503…

MALICIOUS

PDF

40.1 KB Created: 2019-03-17 11:33:22 +03:00 Authoring application: dvips(k) 5.993 Copyright 2013 Radical Eye Software (via GPL Ghostscript 9.07)
MD5: a0fd666a3e9ca2e68521c85342fab63c SHA-1: b25e3e172895f8b38b71dc5e47a871c7af975976 SHA-256: e41f0da5461dd503fecad63f2c9263cb9e1c586315122f314175ad404c058345
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and a critical heuristic identified it as a link farm containing 32 external PDF links. The majority of these links point to PDFs hosted on www.gorillawalker.com. The document body contains obfuscated text and embedded URLs, suggesting an attempt to disguise the malicious intent. The primary goal appears to be directing users to a large number of external resources, likely for SEO manipulation or to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9181

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/podcasting-for-learning-in-universities.pdf
    • http://www.gorillawalker.com/the-unbought-grace-of-life-essays-in-honor-of-russell.pdf
    • http://www.gorillawalker.com/bosquejos-en-la-epistola-del-apostol-pablo-a-los-efesios.pdf
    • http://www.gorillawalker.com/how-to-read-shakespeare-how-to-read.pdf
    • http://www.gorillawalker.com/life-takes-detours.pdf
    • http://www.gorillawalker.com/papas-potato-spanish-edition.pdf
    • http://www.gorillawalker.com/gateway-kindle-edition.pdf
    • http://www.gorillawalker.com/french-polynesia-pearl-of-the-pacific.pdf
    • http://www.gorillawalker.com/looseleaf-for-applied-sport-psychology-personal-growth-to-peak-performance.pdf
    • http://www.gorillawalker.com/moulage-et-thermoformage-plastique-sous-vide-pour-amateurs-et-artisans.pdf
    • http://www.gorillawalker.com/rick-steves-italy-2014.pdf
    • http://www.gorillawalker.com/star-signs-an-astrological-guide-for-you-and-your-pet.pdf
    • http://www.gorillawalker.com/silver-kid-western-issues-2-and-5-action-packed-tales.pdf
    • http://www.gorillawalker.com/the-expectant-parent-s-guide-to-preventing-a-cesarean-section.pdf
    • http://www.gorillawalker.com/pass-key-to-the-lsat.pdf
    • http://www.gorillawalker.com/pigs-make-me-sneeze-an-elephant-and-piggie-book.pdf
    • http://www.gorillawalker.com/so-big.pdf
    • http://www.gorillawalker.com/budapest-hungria-budapest-hungary-spanish-edition.pdf
    • http://www.gorillawalker.com/klinikleitfaden-intensivpflege-german-edition-kindle-edition.pdf
    • http://www.gorillawalker.com/astronomy-internet-linked-discovery-nature.pdf
    • http://www.gorillawalker.com/rosie-s-walk.pdf
    • http://www.gorillawalker.com/keeping-warm-a-sensible-guide-to-heat-conservation.pdf
    • http://www.gorillawalker.com/winter-evening-english-welsh-and-russian-edition.pdf
    • http://www.gorillawalker.com/schoolhouse-politics-lessons-from-the-sputnik-era.pdf
    • http://www.gorillawalker.com/el-saqueo-de-una-ilusion-el-9-de-abril-50.pdf
    • http://www.gorillawalker.com/sketchbook.pdf
    • http://www.gorillawalker.com/arctic-opening-insecurity-and-opportunity-adelphi-series.pdf
    • http://www.gorillawalker.com/in-the-shadow-of-just-wars-violence-politics-and-humanitarian.pdf
    • http://www.gorillawalker.com/salmonella-infections-networks-of-knowledge-and-public-health-in-britain.pdf
    • http://www.gorillawalker.com/estigmas-de-una-noche-sin-copas-spanish-edition.pdf
    • http://www.gorillawalker.com/to-every-thing-there-is-a-season-a-cape-breton.pdf
    • http://www.gorillawalker.com/violin-only-thirteen-wonderful-photos-of-a-violin-for-those.pdf
    • http://www.gorillawalker.com/grocery-workers-in-striking-range-business-the-supermarkets-proposal-facing.pdf
    • http://www.gorillawalker.com/blake-s-nostos-fragmentation-and-nondualism-in-the-four-zoas.pdf
    • http://www.gorillawalker.com/old-town.pdf
    • http://www.gorillawalker.com/business-ethics-case-studies-and-selected-readings-south-western-legal.pdf
    • http://www.gorillawalker.com/relief-a-quarterly-christian-expression-volume-2-issue-1.pdf
    • http://www.gorillawalker.com/defy-gravity-4cd-healing-beyond-the-bounds-of-reason.pdf
    • http://www.gorillawalker.com/namibia-german-edition.pdf
    • http://www.gorillawalker.com/501-minutes-to-christ-personal-essays.pdf
    • http://www.gorillawalker.com/looseleaf-for-applied-sport-psychology-personal-growth-to-peak-performa
    • 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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