Malicious PDF — malware analysis report

Static analysis result for SHA-256 1913b291b51a9d1f…

MALICIOUS

PDF

65.1 KB Created: 2020-12-29 23:24:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: ad9ced165e436ff1c3af46cbff86bf72 SHA-1: cbece3c9c07455bbc51db891c38b28e0f595fbd7 SHA-256: 1913b291b51a9d1f3422c77402a188d29f08436f2aeab04fca2fe4858eba62ce
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • 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.
  • 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://trafffe.ru/wb?keyword=ps4%20second%20screen%20not%20working%20ios PDF link annotation
    • https://lidenezat.weebly.com/uploads/1/3/4/3/134382714/3274789.pdfIn PDF document text
    • https://sixodajumam.weebly.com/uploads/1/3/4/3/134311071/7306651.pdfIn PDF document text
    • https://tujurexi.weebly.com/uploads/1/3/4/7/134743655/1378534.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460060/normal_5fc806b9c452c.pdfIn PDF document text
    • https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/b1304104fa21f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473039/normal_5fb2ebb61dff0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376849/normal_5fa1e7941de59.pdfIn PDF document text
    • https://vutameko.weebly.com/uploads/1/3/4/5/134576445/5040988.pdfIn PDF document text
    • https://wezenazuzive.weebly.com/uploads/1/3/4/7/134764498/lubusesilokuvuw-dunijotu-ribewosoki.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/jobavo/shawshank_redemption_movie_moviescounter.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_off0000c389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC389 5112 bytes
SHA-256: 324fa79e97221a3c89a89f9b2992f7eaa3821d6644b4ce9b338f0af24fd3d8c1
font_01_sfnt_off0000d51c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD51C 10220 bytes
SHA-256: a8cd016574927441ff6513fabe0bd0cc167ae96faf6b247fd3d4e68204376cac