Malicious PDF — malware analysis report

Static analysis result for SHA-256 e760140ec3421fef…

MALICIOUS

PDF

77.7 KB Created: 2021-01-19 15:45:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 438770613103204a109c11260a13f9f7 SHA-1: d85bdf25bce2998bd18558ae8e9d43a852e39883 SHA-256: e760140ec3421fefeb776bf8135fe9909073e38e0cb70111fb34ef18338e8794
244 Risk Score

Malware Insights

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

This PDF file was flagged by multiple critical heuristics as a malicious redirector and link farm, indicating it is designed to lead users to harmful websites. The embedded URLs and the structure of the document strongly suggest a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, which could be used to facilitate the redirection or exploit vulnerabilities.

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
  • 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://cctraff.ru/123?utm_term=luck+bonus+spells+pathfinder In PDF document text
    • https://cdn.sqhk.co/guledijuxi/b9j4hiV/nike_run_club_app_strava.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafaveju/ehb89he/ritoriligigadokezujo.pdfIn PDF document text
    • https://cdn.sqhk.co/zufuxirap/d2iabhj/pijijanobonolukefak.pdfIn PDF document text
    • https://cdn.sqhk.co/sixajuzap/fjeOgdN/ginodowefarexusinazudo.pdfIn PDF document text
    • https://wojedebaroz.weebly.com/uploads/1/3/1/6/131637691/f15cfa599048c6.pdfIn PDF document text
    • https://cdn.sqhk.co/dogatefi/HiiDdWS/littlest_pet_shop_1255.pdfIn PDF document text
    • https://zinadilijisud.weebly.com/uploads/1/3/4/6/134619113/bd279b.pdfIn PDF document text
    • http://jumovuv.22web.org/canon_5d_mark_iv_instruction_manual.pdfIn PDF document text
    • https://subijiderekura.weebly.com/uploads/1/3/4/6/134616270/pilame.pdfIn PDF document text
    • https://tofikopu.weebly.com/uploads/1/3/1/3/131381225/5a19f.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/ThbmZFt/27324043758.pdfIn PDF document text
    • https://momaramurelu.weebly.com/uploads/1/3/4/3/134309976/mejul-forabab-xinuwekex-vefekavova.pdfIn PDF document text
    • https://cdn.sqhk.co/gotoruzud/jjjhjhf/business_plan_sample_download.pdfIn PDF document text
    • https://wezogefizu.weebly.com/uploads/1/3/4/2/134234847/nelabusod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nutimuratibuzur.epizy.com/85179917818.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/mighty_guy_2_funbrain.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/cumulative_relative_frequency_table.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/27049260190.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_off0000f3ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EF 5388 bytes
SHA-256: fc0ebf690e46c365baafd8268bacb819ebb46f8b8c7f7b3f15c06f281ccf76c7
font_01_sfnt_off0001063d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1063D 10404 bytes
SHA-256: 1cd77f92156ca597503a0d449883d59a2baa0b7158f650d7acb4d5020f816b53

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