Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6f5d2a84dc313c6…

MALICIOUS

PDF

154.6 KB Created: 2020-12-31 08:34:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 7c92f53ecb13df822b3146c15d4124d7 SHA-1: 0dc2880a54d505f0a2c0cd14860fe86af7597a24 SHA-256: f6f5d2a84dc313c672d8f9c0d0251a4cad6c934bbbd1a1d4d9be8b8d1b66145c
76 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious document, specifically flagging an image lure linking to an SEO redirector. The embedded URL 'https://trafffe.ru/123?utm_term=doctor+faustus+full+text' is identified as the target of this redirect, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the overall structure and heuristics point to a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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=doctor+faustus+full+text PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4462096/normal_5fbf158678c42.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/c255603b-6be6-455e-8be2-1c92f5f41f3e/68824098215.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fee4baf9-1eec-49fa-8c9b-d6d08f9b6468/8434584435.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14c379c7-03e8-404d-884f-94c954b80544/sales_management_software_laravel_crm_nulled.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/pavejezisemeronagodezig.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/chloroform_isoamyl_alcohol_role_in_dna_extraction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4dd8654-fde5-4a8c-adfb-97b8227df577/multi_optimisation_objective_algorit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63fb3dc1-2c42-415f-8eb7-93198e46dc5a/lufunupiruge.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/12458128706.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e0b7763-02a2-47b4-9cdd-12e44e600664/15th_wedding_anniversary_gifts_for_husband.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f12e0e56-809b-47d9-b881-91e07dafa7e8/fefupelixitotofuxukoxasep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/194e02b8-54cc-4c4b-a5e6-ab43264d9c77/2019_outback_with_manual_transmission.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/vinezen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf052995-7fcf-45ec-97a1-a75d52d75288/florida_gulf_coast_triathlon.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_off00022263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22263 4940 bytes
SHA-256: 3f5846e31081ebf81f5be049be13f57780f51773c55ad5c66827236da28813ee
font_01_sfnt_off0002334b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2334B 11788 bytes
SHA-256: c883efd30b732158cc32e13d921b3e8e68d9c1a5888a4f499a0732503b74a16e