Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d84d9924819072…

MALICIOUS

PDF

60.8 KB Created: 2020-12-03 05:19:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 489557a323b63df0f394d2b0d8c43dea SHA-1: 152637f4f368d0044fab453486dfed5967baf222 SHA-256: c5d84d9924819072502f3aaa597abf169147b4b649c652180d643d2e0291b291
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/wb?keyword=biological%20science%20soper%20pdf In PDF document text
    • https://wekijoborumotis.weebly.com/uploads/1/3/4/4/134484899/f1f71.pdfIn PDF document text
    • https://metuliwilive.weebly.com/uploads/1/3/4/3/134386481/monukuwebapikoluge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc2bfbc2cf09257bd77efeb/t/5fc495fd9b1ed035386f4e10/1606718974436/queen_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fd5b21a-fceb-4254-8ab3-06076eebe5d2/tutesuxinejus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b783db33-68e0-4567-8edd-a46f8d13ecde/my_math_labs_plus_depaul.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/rejajunetadujenufuwutisin.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54e01affbf90a6607a482/t/5fc5e9f1f81c9a2a0c6fe896/1606806007584/lewis_dot_structure_practice_answer_key.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f06b104edf1d7780fa74/t/5fc1ef484f98375720253eeb/1606545225305/36424312738.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bd8314f-6f4f-4281-b634-e846672c8e06/mugevulefasaxotuganijug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3f9e231-7990-41f4-8f46-ef9c46b6ef87/tangled_emma_chase_read_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/842d6e69-a55d-4af0-a7c8-8b821eac8ccf/26611544886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c2134b9-5476-4832-bcc9-f079c6d3883c/44160013377.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72560be9-3194-4a06-ba3e-2f3533bc2d42/liluwaxarivekigiliman.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd024964a3cc4058a5589e/1606222411313/lemofufejipawujob.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/1995_bayliner_ciera_2355_owners_manual.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_off0000afde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFDE 5372 bytes
SHA-256: 081118e18c704fcdc4d601c56c095cbf2fd7c7ed543abb58e371ada6b4a4f231
font_01_sfnt_off0000c236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC236 10716 bytes
SHA-256: 702fe8ababd5fb1723b8aec4392d9561740c38a0e9f92d6e3d1a89b0e8112a22

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