Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd71218c7679258f…

MALICIOUS

PDF

76.2 KB Created: 2021-04-14 16:59:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 1daaa32043cbc9ebde548da50fc212ea SHA-1: 37baa17288e7dd3d4628a41ad76816b5380de861 SHA-256: cd71218c7679258fa82ed6435e2cdf52ef983bdb364fa5b2a23d3bb51aad9059
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://ponafet.ru/strik?utm_term=what+is+silver+national+career+readiness+certificate PDF link annotation
    • https://cdn.sqhk.co/piwizogir/fOjg0Tv/buzutajizikamukolegi.pdfIn PDF document text
    • https://cdn.sqhk.co/lagusive/jhLvqWL/rumitonovakaxexibubot.pdfIn PDF document text
    • https://tijezelaxupoki.weebly.com/uploads/1/3/5/3/135340387/jujida.pdfIn PDF document text
    • https://rulovuwupe.weebly.com/uploads/1/3/5/3/135386045/17b3cf80e6.pdfIn PDF document text
    • https://kizujaxaluw.weebly.com/uploads/1/3/4/3/134393650/b8318aaf93ac93a.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/fha9hhy/music_mp3_player.pdfIn PDF document text
    • https://zavutotarewif.weebly.com/uploads/1/3/1/3/131379951/rixajasanejuve_vibet.pdfIn PDF document text
    • https://cdn.sqhk.co/jufebarur/6jzUcFy/roblox_ragdoll_engine_super_push_script_pastebin.pdfIn PDF document text
    • http://kujamemapevubu.mypressonline.com/physics_in_hindi_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/butterball_deep_fryer_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/scotsman_guide_rankings_2017.pdfIn PDF document text
    • http://gofumakexoj.onlinewebshop.net/cbse_chemistry_notes_for_class_11.pdfIn PDF document text
    • https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_3e2dd87fc2c94c94874fae36a26b1356.pdf?index=trueIn PDF document text
    • https://db6d3479-2aeb-4a59-914c-1f55c48648c8.filesusr.com/ugd/9f5433_139a0f9ce5a54a58a38f872533277b71.pdf?index=trueIn PDF document text
    • https://0c17d2ad-06a2-4efd-9128-26148cac6670.filesusr.com/ugd/44320b_15760d577e4144bdb6a5f5d8580ab01c.pdf?index=trueIn PDF document text
    • http://domuromu.atwebpages.com/lodelodakepiz.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/77507247063.pdfIn PDF document text
    • https://30cc9e9c-6145-4029-bfdc-d0561bdb3a10.filesusr.com/ugd/0dcf4b_c1270c257e6f458c8010a625c11e762c.pdf?index=trueIn PDF document text
    • https://1df32be7-5e6a-491e-80e4-5c558052ef26.filesusr.com/ugd/e02e08_58cca8f2c6974b05ae533fc593106050.pdf?index=trueIn PDF document text
    • http://gukutimaguvuzum.onlinewebshop.net/sistema_mexicano_de_alimentos_equivalentes_2019.pdfIn PDF document text
    • https://6e345194-e688-4037-aa24-2ff230a16836.filesusr.com/ugd/ce9fe1_5a61e38ffd6a469c9e263cbc49ca9ac8.pdf?index=trueIn 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_off0000e8d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D7 5180 bytes
SHA-256: eb3eb0a5af1fa1744d80199a2f9611f14dd8573d01929b364246a20640c7a56a
font_01_sfnt_off0000fa83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA83 12116 bytes
SHA-256: 2668c745b6378164fd10814f4035a88555eea2d173c67d03396c7b9f348bfbb5