Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8151bed8c3c815…

MALICIOUS

PDF

68.3 KB Created: 2020-12-26 02:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 249456d6079af26f2c413c67f230bbbe SHA-1: 478afa8a899e9fbe72eeb5d8a8c4c59132c5bf4b SHA-256: 5d8151bed8c3c81532ac0f9aa49c02922c762f7559833a3309de5e12487e346b
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • 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=line%20segment%20finding In PDF document text
    • https://movuvoxuwonorad.weebly.com/uploads/1/3/4/6/134667433/6262402.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481291/normal_5fd98256d9fef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368991/normal_5fd7dca16962d.pdfIn PDF document text
    • https://gugagefa.weebly.com/uploads/1/3/4/3/134343265/5639857.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368265/normal_5fc8685619126.pdfIn PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/2379673.pdfIn PDF document text
    • https://pakovabe.weebly.com/uploads/1/3/4/4/134442852/8568986.pdfIn PDF document text
    • https://badadivuzadan.weebly.com/uploads/1/3/4/5/134523039/naxew-botazopokubi.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/5406ada1-73ed-423a-b201-50f3c3b22f17/ouku_double_din_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/617dc5ee-3347-4d09-a9a8-b77af704a236/soundarya_lahari_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4d26e74-9443-4b8d-9c73-8f0c9a6f4a7e/57012103164.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/798fa16d-3843-4405-a365-ef00588e72ce/fefomexofadubid.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/du_admission_2019_ug_form.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_off0000cf50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF50 4828 bytes
SHA-256: 02f82f88d5ce696eccda201f313819abfce124f49b07de6580ac19b262958dd9
font_01_sfnt_off0000dfb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB7 10972 bytes
SHA-256: d45d3076f225197bf5368325a6c88682a632b636216a70c4867a82abc957f2d1

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