Malicious PDF — malware analysis report

Static analysis result for SHA-256 191f812d32c6c4b9…

MALICIOUS

PDF

43.8 KB Created: 2020-10-11 02:43:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: aa48ad4bd325c66287b3902ff28cb43b SHA-1: 38c2cb97e0d2251590aa4a0699bc270b5430845c SHA-256: 191f812d32c6c4b95d50bef5f7ae95ef83b6b6dc6fd4a640de61608e98196638
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://gettraff.ru/strik?keyword=force+and+destiny+keeping+the+peace+pdf In PDF document text
    • https://site-1042867.mozfiles.com/files/1042867/jakamexufunox.pdfIn PDF document text
    • https://site-1038771.mozfiles.com/files/1038771/83421421082.pdfIn PDF document text
    • https://site-1037829.mozfiles.com/files/1037829/64790695413.pdfIn PDF document text
    • https://site-1039351.mozfiles.com/files/1039351/99695078707.pdfIn PDF document text
    • https://site-1039301.mozfiles.com/files/1039301/5052805412.pdfIn PDF document text
    • https://site-1042843.mozfiles.com/files/1042843/99003555770.pdfIn PDF document text
    • https://site-1037096.mozfiles.com/files/1037096/filaxowezolefutajopekiji.pdfIn PDF document text
    • https://site-1042432.mozfiles.com/files/1042432/9508469805.pdfIn PDF document text
    • https://site-1036975.mozfiles.com/files/1036975/dikelufumekud.pdfIn PDF document text
    • https://site-1042191.mozfiles.com/files/1042191/32189026165.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5323/3814/files/ground_floor_plan_of_theatre_listening_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3637/7756/files/pasisidodametedajixeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6557/2514/files/6_gauge_wire_home_depot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2802/8312/files/mp4_mania_punjabi_movies_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2135/5173/files/13866105587.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df92b795-ad9d-4756-a6b3-2004c1fd835c/59523181607.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ee11ecc-8e61-4daf-9a97-df38592a4a05/84204738603.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71a7fd27-f2ea-412b-aa9e-4c9c3e21d218/buzuwo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1B 5504 bytes
SHA-256: 557ef23abcade4b6a692ce119c200d4716e8f8a16c1ccae10f61cda981a02871
font_01_sfnt_off00007edd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDD 10208 bytes
SHA-256: dab7ed96f0b9778814f48a98e37283e802ad19aeee2d7c816aaf0700625c8575

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