Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afffcd6f780cd30…

MALICIOUS

PDF

48.3 KB Created: 2020-10-01 17:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: dc418b4337dc0f5e98300e11c54a7746 SHA-1: 2c7e881d1e76fe3069603c13d269b1501b20dce6 SHA-256: 4afffcd6f780cd3092839a28d2501a8e4244a9a1e32ee79e0e31004cfb71e098
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=2014+audi+q5+owners+manual+pdf+download In PDF document text
    • https://site-1037175.mozfiles.com/files/1037175/dixevidajafuz.pdfIn PDF document text
    • https://site-1036680.mozfiles.com/files/1036680/32151602506.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/1/0480/6636/3546/files/11159559159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1522/8570/files/pathfinder_lay_on_hands_trait.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5961/5646/files/the_great_gatsby_chapter_1-2_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1520/9123/files/xoboxulibamakud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9846af8-d59f-459c-aca6-200f17928f09/vuxijutigo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b49ba55-345e-42d2-84fe-e62a50961fcd/59177840844.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17195ecb-326b-4063-a268-50c8e3a4cfe9/92327389635.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e039ddf3-d8e9-488a-b2de-09ebb0aabcb6/takoruzetusofamuwovid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10d06656-0be2-41c2-9329-5813fffbd7b2/97061506244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7847/6195/files/kitchenaid_9_cup_food_processor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2825/8726/files/midway_rv_park_centralia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/5881480233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6723/4714/files/89929128876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/9922/4983/files/watch_john_wick_online_reddit.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_off0000714d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x714D 5848 bytes
SHA-256: cfa2a1561c23ee91311592af8c9f3b46ecbb37b05fa6e1b9d7597fa9ad0fe499
font_01_sfnt_off0000853a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x853A 14380 bytes
SHA-256: f01bc85cfb0b4a3ec4e5c6b07eb0cfb8e7c93323f2d9e2e7745014a5d4597d1a

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