Malicious PDF — malware analysis report

Static analysis result for SHA-256 445ab2fcadec87dc…

MALICIOUS

PDF

97.6 KB Created: 2021-02-02 16:42:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 71e729cf29e445c808ad9e64e0f0638c SHA-1: f21193f25c0e51d88c75b368b77771d491eec248 SHA-256: 445ab2fcadec87dc7818367184351e2d1ae4deb2b856702f7c16f878be109b67
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though heavily obfuscated, suggests a lure related to game trophies, while numerous extracted URLs point to potentially malicious or disposable hosting domains. The presence of external URIs and link farm characteristics strongly suggests the document is designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/wb?keyword=powerpyx%20division%202%20trophy%20guide PDF link annotation
    • http://kkkirrreeee.space/vacation_itinerary_samplec4i1c.pdfIn PDF document text
    • http://jinokonur.22web.org/siemens_electromagnetic_flow_meter_installation_guidelines.pdfIn PDF document text
    • http://songkfrk.site/60977331728crx2.pdfIn PDF document text
    • http://mowewuwopirot.iblogger.org/marvel_mcu_trivia_questions_and_answers.pdfIn PDF document text
    • http://hamlikjorettoop.ru/40099409938bd4i9.pdfIn PDF document text
    • http://remontvorot24.com/54280880015wi4hq.pdfIn PDF document text
    • http://about-central.com/20_ejercicios_metodo_algebraico_quimicajm0xu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421770/normal_6008a5a30da58.pdfIn PDF document text
    • http://smcjd.com/landisgyr_e450_user_manual5s0os.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454973/normal_5fd1e28a423a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371261/normal_5fcb0f3d21de1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488581/normal_5fde745d62955.pdfIn PDF document text
    • http://qwonder.space/english_grammar_exercises_online_with_answerse8605.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469841/normal_5fd939f394919.pdfIn PDF document text
    • http://lidlid.xyz/tizimazetobizefks7nv.pdfIn PDF document text
    • http://italysummer.space/79230850210hyk6h.pdfIn PDF document text
    • http://legko.travel/dream_machine_gameplay7hz95.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/somamere/mission_debrief_template.pdfIn PDF document text
    • http://pigozezidum.rf.gd/consolations_of_philosophy_sheet_music.pdfIn PDF document text
    • http://vekemifapujev.rf.gd/sagogakeginabik.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/kusalenavumuwoj.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/vlookup_to_bring_data_from_another_sheet.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_off000130c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130C8 5432 bytes
SHA-256: 5ea94d4ccbb03781cb396e589185641c6597098373bf9f19f10cb4710e84de5e
font_01_sfnt_off0001436b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1436B 16536 bytes
SHA-256: a1dc2d283d4d72b4cf531ca5cd8cdc4afc180369ccc9bc316d93efb7c431414f

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