Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e7144f484b991ee…

MALICIOUS

PDF

77.5 KB Created: 2021-03-24 08:03:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 27c362582b44908e182b0fd1a9b3dec5 SHA-1: 53179d1ced4a7ffcf0a085afd98a105bd116cd0a SHA-256: 6e7144f484b991ee14df37de4cf9dd2e17c920c1082819ef0c29dea1b623bc79
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, with a high heuristic score indicating it functions as a link farm on disposable hosting. The ML classifier also flagged this PDF as malicious. The presence of external URIs suggests an attempt to redirect the user to malicious websites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://vilenefex.ru/strik?utm_term=my+electric+fireplace+stopped+working PDF link annotation
    • http://sojuvofud.22web.org/does_gap_baby_run_big_or_small.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403407/normal_5ffa241a14b4b.pdfIn PDF document text
    • https://cdn.sqhk.co/mubutuve/ijzif0U/australian_motorcycle_adventure_tours.pdfIn PDF document text
    • http://tonagruz.ru/al_quran_30_juz_mp3_free_download_raraqwfz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409092/normal_602b881382b11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449779/normal_601814677f5f5.pdfIn PDF document text
    • https://cdn.sqhk.co/dewufidabo/hchahhK/bubble_shooter_puzzles.pdfIn PDF document text
    • https://cdn.sqhk.co/jikubivev/fMvvgfi/english_songs_hits_2019_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kisasizaro/Ygfhfhe/shooting_games_for_xbox_one_2020.pdfIn PDF document text
    • http://lovemecompletely.com/19169885908t2ru1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414175/normal_6056add3ca95e.pdfIn PDF document text
    • https://cdn.sqhk.co/luwiwaduna/eshaVjh/word_board_app_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/ifzOeja/zombie_blast_crew_offline.pdfIn PDF document text
    • https://cdn.sqhk.co/rawewosit/hdgdiaq/15088706968.pdfIn PDF document text
    • http://nususolajegak.iblogger.org/bacardi_gold_rum_nutritional_information.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://surozot.rf.gd/floris_mod_installation_guide.pdfIn PDF document text
    • http://gelepovasogadax.epizy.com/32890050314.pdfIn PDF document text
    • http://nibejodawugizex.rf.gd/business_plan_for_software_development_company.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_off0000ee81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE81 5588 bytes
SHA-256: 277a1a66badcc0190be8b6860bf8240c9c7477750f1b2e583c4a3badd78e92f4
font_01_sfnt_off000101bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BD 10816 bytes
SHA-256: a907c70495c969200d32fa2375cfba298525330f2a877466fc41b2d76efd083b