Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6cdd806f5933d91…

MALICIOUS

PDF

64.3 KB Created: 2021-02-04 13:50:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: db89454fcc96096d3bf4cc8066584a7c SHA-1: f3a5c62720a215a7f5cf7380d296c3df83cf519b SHA-256: f6cdd806f5933d912b76cedc58739ea4a5500ed7af1a342535dd82f11380a86d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan and an ML classifier indicating maliciousness. The document contains numerous embedded URLs, many pointing to disposable hosting and link farms, suggesting a phishing or malware distribution attempt. The presence of 'utm_term' parameters in some URLs further indicates tracking for malicious campaigns. Although no scripts were explicitly extracted, the PDF structure and embedded URIs strongly suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://jottigo.ru/123?utm_term=tgmd+3+equipment PDF link annotation
    • http://dashcamtopbest.com/baratza_virtuoso_repair_manual3tie0.pdfIn PDF document text
    • https://tiwokixaxuvap.weebly.com/uploads/1/3/4/2/134235176/4562374.pdfIn PDF document text
    • http://gijutudubesakuz.iblogger.org/oecd_report_2019.pdfIn PDF document text
    • http://yarrebitteh.online/wild_blood_movie_trailerwnb86.pdfIn PDF document text
    • https://resusogid.weebly.com/uploads/1/3/5/3/135346187/6673505.pdfIn PDF document text
    • https://zupeloniz.weebly.com/uploads/1/3/4/0/134018773/536bd.pdfIn PDF document text
    • http://websporizlehd.com/buzizuzavuud7ap.pdfIn PDF document text
    • http://maewallace.com/tobafexudumo2zvtk.pdfIn PDF document text
    • http://gloslides.com/28988504279s90f2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guvamimifufirar.rf.gd/arcformkhoz_ill_haj.pdfIn PDF document text
    • http://wikugojumoxo.epizy.com/13150530489.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/angel_has_fallen_full_movie_online.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/190755617.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/domakatekugadalopibapoju.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_off0000c046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC046 5004 bytes
SHA-256: 9959c59120677a0d5248e3f9845449ee378075468e41ee4fcd0ed413f25d029c
font_01_sfnt_off0000d13c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13C 10304 bytes
SHA-256: 6be8b93965942efe8c8a14f4c761288006d624b9f28715adfd9b7a2f5893ca5d

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