Malicious PDF — malware analysis report

Static analysis result for SHA-256 4453f1fd9cd98d03…

MALICIOUS

PDF

289.8 KB Created: 2020-11-28 01:25:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-10
MD5: aaef760bce8a8d7fd288dfe5769d86f9 SHA-1: ab67e105d9b0bf35a6c291012ebe0b966f155c5b SHA-256: 4453f1fd9cd98d0399dd82f75bc1279b2aeb7e94f3827ce497408b442cf9d2a8
296 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9781

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Fake browser/security check with command step high SE_FAKE_BROWSER_SECURITY_CHECK
    Document combines browser or security-check verification language with instructions to paste or run a command
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/wb?keyword=java%201.%206%200%2025 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387035/normal_5fa708e90c7a1.pdfIn PDF document text
    • https://zowadadevifu.weebly.com/uploads/1/3/4/5/134597758/b60fb86fb4.pdfIn PDF document text
    • https://zufikuwokuz.weebly.com/uploads/1/3/4/5/134522796/sijekapinemanav-loreve-zodudavodazasep-matetorijazitu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388612/normal_5f9250f16650a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445739/normal_5fb7ed874e680.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/f30f7dac-7a9a-4778-a88a-3ee8e3cc9f1c/imaginarium_medieval_castle_assembly_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37e66899-efcf-4142-84bf-46cabcce12ce/rakukukorati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bef438a-28c8-4402-970c-d707debd7762/notekovapej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/247471cf-a0fc-4f9d-ab69-7c069f4f835c/how_to_download_dem_data_for_c4d.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fec24a4-c601-4698-ab32-eff34010f4a4/what_do_you_call_your_grandparents_sister.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/947d7b53-4a50-4880-99f3-b9a2765c0efc/68725868472.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ab5a543-5631-4966-8c51-729cef6e0f43/69867229127.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85eda8a2-9fdb-4358-8537-96c3b51cf99c/rusosirerirawenetedu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c01d718-a363-4874-829e-344a23a37653/zisomegusojubejuzab.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_off00043898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43898 5060 bytes
SHA-256: 89741a035ff7c31acd66a0645794815c907dba2f53dcfb1278028ffa5be33c5c
font_01_sfnt_off000449fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x449FB 15576 bytes
SHA-256: 8f07db69067120815973e70170a2ddf14894bffa11bf6c631f3cc8424bbab678

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