Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddbaff4947aadf6…

MALICIOUS

PDF

69.7 KB Created: 2020-11-13 09:54:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: 9d0fc4e82306785b5e03c5cb9de9e647 SHA-1: 3501cc711498c4f016cad341fa7a7150a34e131e SHA-256: 3ddbaff4947aadf6ed210e888a44b2aa1dd3c3e9d2dc71d8c4b1531d42779e84
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=ai+ra+lenh+giet+ngo+dinh+diem PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416304/normal_5fa8c892c3c3e.pdfIn PDF document text
    • https://lupigufenof.weebly.com/uploads/1/3/4/5/134509144/74c419d.pdfIn PDF document text
    • https://tewifevorifoja.weebly.com/uploads/1/3/4/3/134387655/2989313.pdfIn PDF document text
    • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/e380510d72b73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411708/normal_5fa1053879da6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415304/normal_5fa24f896233f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367687/normal_5f9916c41f163.pdfIn PDF document text
    • https://verafilutawus.weebly.com/uploads/1/3/4/5/134597792/c1794d73.pdfIn PDF document text
    • https://pewovorawegoxuv.weebly.com/uploads/1/3/4/3/134351704/dorikifo-mekozaniv-kagevubezow-donuwunurin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427079/normal_5f9a4b6e143e5.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/xubifupi/63997176353.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac4b058b-2c12-4088-bec4-be9a2b7948a8/47453159216.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c48f15c2-be24-4ee3-8d36-5b088a1da529/clipper_guide_combs.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/troy_bilt_bronco_mower_deck_diagram.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF97 5048 bytes
SHA-256: e2a2c1ecdddb816605974e0b1d16ca2d2878357da5372f9d7698826de871472d
font_01_sfnt_off0000d08f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD08F 10824 bytes
SHA-256: aed9f5616cb27e5db96c3bd8107d5ed9591ccb493cfbb9e455d73cdd1b5191bf
font_02_sfnt_off0000f467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF467 16208 bytes
SHA-256: 8a920642403e862b8d76a30d6502ed32e081761114de4860b32093463e1ee433

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