Malicious PDF — malware analysis report

Static analysis result for SHA-256 f86c94eac77a9192…

MALICIOUS

PDF

75.0 KB Created: 2021-05-12 11:26:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3901f7baa4783dcbed5bd79cb0b29bab SHA-1: c8e533035dca4b3457038bf53f302a960c330342 SHA-256: f86c94eac77a919254648715761a8003b746c2084b753bf509689e5c3e64ecf2
126 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable hosting or redirectors, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically flags the document as a link farm on disposable hosting, further supporting this assessment. No scripts were extracted, but the presence of multiple external URIs is a strong indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jumiwimov.ru/strik?utm_term=stinky+steve+vs+the+burpinator+pdf PDF link annotation
    • https://cdn.sqhk.co/peposusuwi/mibiavg/categorias_gramaticales_espaol.pdfIn PDF document text
    • https://cdn.sqhk.co/wafixagi/jhihghb/crash_bandicoot_race_ps4_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/sowanigog/geTgcge/wijidujefoguvinewezi.pdfIn PDF document text
    • https://cdn.sqhk.co/dusujukakal/Yif5m7B/t_mobile_cheap_phones_without_contract.pdfIn PDF document text
    • https://cdn.sqhk.co/jiguluzufuwa/1L3hWGy/csr_racing_3_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/igeMpSg/93665361888.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/gcgeheT/lupezekowufabarotodan.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/qG5RjfD/tuviwelebebazewugiwoz.pdfIn PDF document text
    • https://cdn.sqhk.co/kevovevude/tQ2ih97/best_word_game_apps_free.pdfIn PDF document text
    • https://cdn.sqhk.co/zarejesorufo/ec3jgjf/60896579738.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/jahb8ge/toxanojijodasapoxalupemid.pdfIn PDF document text
    • http://notojubemeduxan.iblogger.org/amtrak_northeast_regional_schedule.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/hbjggh5/sims_4_football_career_cheat.pdfIn PDF document text
    • http://zegevuk.22web.org/btinternet_mail_server_settings_android.pdfIn PDF document text
    • https://cdn.sqhk.co/bipuzojafa/ig6RgcX/rush_hour_2_cast_isabella.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pakoxerevigere.epizy.com/calvary_temple_8th_album_songs_free.pdfIn PDF document text
    • http://jamujufumazuwir.rf.gd/2754822030.pdfIn PDF document text
    • http://lotawovuvowuk.rf.gd/gonidu.pdfIn PDF document text
    • http://figapow.epizy.com/vazutixogokogaxi.pdfIn PDF document text
    • http://mowoled.epizy.com/40610405316.pdfIn PDF document text
    • http://fomobiwudaz.rf.gd/speculation_tax_bc_online_form.pdfIn PDF document text
    • http://zikifivetijunu.epizy.com/econometrics_by_example_free_download.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7BB 5564 bytes
SHA-256: 3000acba9f223b4fa4759a73919bb34557c0dec81c1c128c907eb822d26be65d
font_01_sfnt_off0000faa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA7 10420 bytes
SHA-256: 27d2f1deaf8d6d8da58668a52a9e156a2c4a8abcb972a2b2effe09313d5473c6

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