Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa85922a1081a479…

MALICIOUS

PDF

70.8 KB Created: 2020-11-11 00:47:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 86dda493022caf85a640a706b05b8124 SHA-1: 40da473878ac667a070c8506fbcf692e33890927 SHA-256: aa85922a1081a479efb08a7355c1c4b5897540555a66f8bba8318cd0c3a94c02
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/wb?keyword=how%20to%20jailbreak%20wii%20with%20usb PDF link annotation
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/rotizizalipi-xulejowo-wegevok-xutijub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369927/normal_5faa23f165368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377663/normal_5f8b2532d5092.pdfIn PDF document text
    • https://pekedilude.weebly.com/uploads/1/3/4/3/134324883/0918bf.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/227c790b-4c72-428c-8c36-5e96a43ccf53/across_five_aprils_full_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5e35720-45e1-495b-bb72-e5c66e20f8e2/bose_vcs-10_review.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/twinkle_twinkle_little_star_piano_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e27833ba-c096-48c2-b6d7-99cabda57d23/black_labor_white_wealth.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/donoxabitirotejomidogalu.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/vtech_smart_shots_sports_center_red.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/biotecnologia_industrial_volume_4_ebah.pdfIn PDF document text
    • https://s3.amazonaws.com/takeju/74223287064.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/anh_nguyen_cao_ky_duyen_lo_quan_lot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14c97100-12cb-4449-adba-2ab75e0f7808/75662006333.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/28985702867.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39d2e26c-7535-4294-b31f-0cd322582438/mujon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c594742c-b733-4f97-a2f1-fdb9fca173e1/besodefezaxamatowezogetim.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_off0000d855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD855 5104 bytes
SHA-256: ec7935b159016823724e7c66469816e83a9115eac04a52f66792a9b93120adc8
font_01_sfnt_off0000e9b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B5 10768 bytes
SHA-256: fea94701c24f0a4332da03865a215b661c19ff90e8652e4ee6e1dfcdd9792282