Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af65a4645ea977f…

MALICIOUS

PDF

71.1 KB Created: 2020-12-29 15:32:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 69ab245e926a19ccfe0d709cd3def550 SHA-1: 226a8cfa664e7ebf67cf2f24395fc80c3364d1d3 SHA-256: 4af65a4645ea977f5a2586571c5e114d141a462af02f0f050b3bbaf43d27fabb
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/wb?keyword=video%20call%20from%20cartoon%20caterpillar PDF link annotation
    • https://zoxusikajikad.weebly.com/uploads/1/3/4/8/134851315/tiduxud_zamudaropimu_zufikeruva.pdfIn PDF document text
    • https://wugeneziwepuzi.weebly.com/uploads/1/3/4/4/134494794/1986611.pdfIn PDF document text
    • https://cdn.sqhk.co/tezakagadol/jbGht6n/play_4_night_florida.pdfIn PDF document text
    • https://cdn.sqhk.co/tesikotuk/ZicmhbO/bubble_time_pet_grooming.pdfIn PDF document text
    • https://joxiwawetesamiv.weebly.com/uploads/1/3/4/3/134306419/85aec05e814ec.pdfIn PDF document text
    • https://sorimuzumetig.weebly.com/uploads/1/3/4/5/134519591/47349625da.pdfIn PDF document text
    • https://cdn.sqhk.co/namaboniki/jfvJBjd/zombie_harvest_mod_apk_rexdl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c46ab2b-4405-47a6-abf7-7823567155eb/54532421528.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e76d4fee-b2a6-429b-a2f6-cc21d1130918/5e_fighter_battlemaster_maneuvers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7a8aa52-d7d2-4451-bc62-1207991eb0ca/28716018218.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12b351f4-e156-4898-bebb-8da474d99e5c/hepatitis_b_surface_antibody_labcorp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4672307a-328b-42a7-b003-e116bd606dd5/51987100212.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2846b11-72aa-4eeb-9822-7b9b0b7f1bf5/riddle_me_this_penny_has_5_children_answer.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_off0000db8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB8A 5088 bytes
SHA-256: 3b592790c2df831818adf8a2c5db0d1c374f1cfd7f12fcfa998380de3be6c482
font_01_sfnt_off0000ecc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC9 10132 bytes
SHA-256: ef426e6da58bb849a6293932dd6c71d84ef5df7b37140b7f58438bc62c9695a8

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