Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d6f80a967dfd44…

MALICIOUS

PDF

81.9 KB Created: 2021-05-02 16:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8bd70c4060e4dec7dc559d2cef889f2f SHA-1: 22575fc96c082a893283c1dc09348b599f1cd4ad SHA-256: 89d6f80a967dfd44c9e995869ef981d85a55bdbc9ab882ac88a9a4916682d4f8
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a common tactic for link farms used to distribute phishing content or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external URIs suggest it's designed to redirect users to potentially harmful sites, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/strik?utm_term=the+entertainer+sheet+music+beginner PDF link annotation
    • http://artemk.ru/cello_sight_reading_exercisesi15gn.pdfIn PDF document text
    • https://tarezusubem.weebly.com/uploads/1/3/5/3/135386237/foropixe.pdfIn PDF document text
    • http://sweetmeet.online/bedtime_stories_movie_australian_ratingz71c0.pdfIn PDF document text
    • http://esmoney.site/fomebebovawur5tzma.pdfIn PDF document text
    • https://cdn.sqhk.co/kadeposamo/chehajg/49910764318.pdfIn PDF document text
    • https://kifesajisibak.weebly.com/uploads/1/3/4/8/134884742/4194662.pdfIn PDF document text
    • http://dominis.xyz/jopefovulutabezetlih32.pdfIn PDF document text
    • https://cdn.sqhk.co/xixewebirike/ia1hgsU/cookie_clicker_hacked_arcade_games.pdfIn PDF document text
    • http://hairhome.moscow/hp_envy_4500_printer_ink_cartridge_replacementb56x0.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/gBYJYhj/88159251445.pdfIn PDF document text
    • https://cdn.sqhk.co/lebogomatoze/uhgjhjK/x-_wolf_mod_1._2._0.pdfIn PDF document text
    • https://cdn.sqhk.co/tamoravuwera/heBnhjR/arcade_games_emulator.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/2LJhdd7/best_free_online_courses_to_learn_spanish.pdfIn PDF document text
    • https://cdn.sqhk.co/texekikevow/Cpaibic/putusonefiviru.pdfIn PDF document text
    • https://rogapunuki.weebly.com/uploads/1/3/4/3/134375427/likuje-vabufur-nevabumadid.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/80660ec5-f606-415e-bb2b-5135f8078b59/describe_the_rainy_season_of_advancing_monsoon_season.pdfIn PDF document text
    • http://rasunafosav.epizy.com/natujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4054f736-d184-403f-a93d-69e852635820/troy-bilt_2700_psi_pressure_washer_175cc_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/627f1502-8c1e-4f82-b3e7-54a6cacf9cd4/90432163873.pdfIn PDF document text
    • http://lanosewidem.rf.gd/33096149833.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4da2886-0545-4f48-8c42-678f1aee59e9/pogifo.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_off00010254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10254 5272 bytes
SHA-256: f3510bec90ac8fce6e649e47deb12ba9cd048cbbdca812ea318a093bcc98a6fd
font_01_sfnt_off00011411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11411 11180 bytes
SHA-256: 183d309dc069ad436cf9f1528c4643ae96d339eaaa6834a7ad924a88c508edda