Malicious PDF — malware analysis report

Static analysis result for SHA-256 f367a71d574f3feb…

MALICIOUS

PDF

78.1 KB Created: 2021-05-17 16:36:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 368551f534b460911bea4431f5c2e2db SHA-1: 231e367727fe59fd65c90ae5ba3e299c348bfc24 SHA-256: f367a71d574f3feb66a3ad59806f2c346f44bf0410d1eabd3568a9116fdde618
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The 'SE_CLICKFIX' heuristic suggests the document is designed to trick users into executing commands, likely to download and run a secondary payload from one of the embedded URLs. The document body, though heavily obfuscated, contains references to disassembly and technical topics, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://resalured.ru/strik?utm_term=how+to+disassemble+logitech+thx+speakers PDF link annotation
    • https://cdn.sqhk.co/kagurase/jd1egfD/85454576246.pdfIn PDF document text
    • http://rumafelaneli.mygamesonline.org/38754117449.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/hgxgjdb/hit_and_knock_down_hack_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/rajexizeba/jPXjhji/starlink_launch_today_uk.pdfIn PDF document text
    • http://moxipafuxoxo.mygamesonline.org/pazozosoruvem.pdfIn PDF document text
    • http://jiwitoletazadag.iblogger.org/first_anglo_boer_war.pdfIn PDF document text
    • http://guxetiz.22web.org/online_birth_chart_compatibility_reports.pdfIn PDF document text
    • http://wowogobofomufu.mygamesonline.org/bemor.pdfIn PDF document text
    • http://zivokuj.iblogger.org/best_running_programme_for_weight_loss.pdfIn PDF document text
    • http://vopibuxipem.22web.org/doxutovelugim.pdfIn PDF document text
    • https://cdn.sqhk.co/luwiwaduna/bjdUogf/balavopaxudepewipew.pdfIn PDF document text
    • https://cdn.sqhk.co/naketego/ZMxhhg6/city_sports_shoes_for_sale_in_pune.pdfIn PDF document text
    • https://cdn.sqhk.co/guzupewad/hgehdih/52450909448.pdfIn PDF document text
    • https://cdn.sqhk.co/bedepekemat/KmxQogd/zutevelilegonuziranibovof.pdfIn PDF document text
    • http://fortuneo.biz/space_shuttle_images_hd7mbo0.pdfIn PDF document text
    • http://sportplays.ru/mortal_battle_fighting_gamesku153.pdfIn PDF document text
    • http://wildboost.club/heartache_tonight_piano_sheet_musicauswb.pdfIn PDF document text
    • http://6gusevshop.space/design_sponge_travel_guide_bostonhefu7.pdfIn PDF document text
    • http://selectgetc.top/crosman_1077_spare_magazinellv1h.pdfIn PDF document text
    • http://pililiriniru.mypressonline.com/10514950929.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puderumito.rf.gd/james_and_the_giant_peach_book_review.pdfIn PDF document text
    • http://xanivuva.epizy.com/fapobozulonulebuj.pdfIn PDF document text
    • http://gavawekib.myartsonline.com/bowditch_download.pdfIn PDF document text
    • http://wuparol.epizy.com/lekepuwisodopetazupesalaw.pdfIn PDF document text
    • http://zoxukawozo.rf.gd/xerox_altalink_c8035_manual.pdfIn PDF document text
    • http://giwuvupajot.epizy.com/apache_kafka_tutorialspoint.pdfIn PDF document text
    • http://tolitaxolumupu.rf.gd/mathematics_basic_formula_for_competitive_exam.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_off0000f0a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A3 5812 bytes
SHA-256: 2bad6a4d2e51572dd508fff7838e8283f00355960600ce259e8faa17fad44d6e
font_01_sfnt_off00010452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10452 11192 bytes
SHA-256: a6000fd84076fb46643cc37ff75ff3aca8d61a228ce437c7c90ec6b29e0d8418