Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d3a3d3047bafe2…

MALICIOUS

PDF

67.7 KB Created: 2020-11-26 03:35:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-27
MD5: 1875b540949f23735eca4ca3ea190928 SHA-1: 3e6895ee896b93200eece741497f53e118c0973a SHA-256: c5d3a3d3047bafe25c4dff225532e4a46444eb564022af45befab66fb4da09f7
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://trafficel.ru/strik?utm_term=calvin+and+hobbes+final+strip PDF link annotation
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/kezedivalo-bolumukejufufik.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/70184583-aac4-4ecb-8978-849a3c7af2a4/zemedomawenudivopo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12c2988f-196e-4eb3-b5c5-2c7528b013a8/10441560529.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/super_smash_flash_2_by_games_lol.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/ligelisigub.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/36689990741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1bbdaeb-3ddf-4383-9e37-bca6fd589f16/sitabupogiverunidifokar.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/14_different_tricks_on_cart_surfer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ee372ea-104a-49b4-af9b-db72911c4536/sql_performance_tuning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/897340a2-5da0-44da-8774-fcce2c6a354e/marketing_an_introduction_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3008c9c4-fa82-4c48-8957-c62f10d57fa5/vuzalapo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c62c161c-a65e-4bca-b9de-6e54a9bf6d02/bikebim.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/charlotte_olympia_suede_platform_pumps.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/writing_and_naming_binary_ionic_compounds_worksheet_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d12edfa1-cd94-48d2-b61f-3af9aa71ad49/95769224412.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_off0000cbbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBBF 5232 bytes
SHA-256: 8b31b24dab52300ea9ae4c552d839ce43e3d74085f8b4aa0c2fbd64faa5cacec
font_01_sfnt_off0000dd82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD82 11120 bytes
SHA-256: dd932bdd2b2d11ca7b894dce1167a14a61fac09360004d45ea526761fc95695b

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