Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2faea76e2629705…

MALICIOUS

PDF

82.3 KB Created: 2021-04-25 09:45:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 58c3045fe0e35819fc1d08d5ca10fc18 SHA-1: 7167a2d19513976e32fe3d654f547ac4bd1e8dc3 SHA-256: c2faea76e2629705f208805b20489892e139d03056153ed04a4644c67d41614a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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/strik?utm_term=how+to+reset+frigidaire+gallery+dishwasher PDF link annotation
    • https://cdn.sqhk.co/nowonipewo/t2yugi0/77244813491.pdfIn PDF document text
    • http://bejuzoz.iblogger.org/accounting_information_system_james_hall_test_bank.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/TMSxFON/veputav.pdfIn PDF document text
    • http://raraveluwogevuw.mypressonline.com/catecismo_menor_martinho_lutero.pdfIn PDF document text
    • http://rakapugijumub.sportsontheweb.net/wegezojod.pdfIn PDF document text
    • http://bisewilorilamej.sportsontheweb.net/jarujufewolijajuzagedez.pdfIn PDF document text
    • https://cdn.sqhk.co/gubujurit/AgczcEQ/pixel_zombie_frontier_hack_apk_android.pdfIn PDF document text
    • http://gezawazerige.iblogger.org/60583525021.pdfIn PDF document text
    • https://cdn.sqhk.co/nodujugebi/Ngdgigc/infectious_disease_specialist_houston_tx.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/jfxghji/43111965974.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/jejcNRQ/muxovoj.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/dibTBS5/fokefuwuxubawikog.pdfIn PDF document text
    • https://cdn.sqhk.co/numorolele/cijZ1d8/tuzulizidorisara.pdfIn PDF document text
    • http://zukoretevir.medianewsonline.com/how_to_use_record_player_in_animal_crossing.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sekuwomexapa.myartsonline.com/sistema_circulatorio_para_nios.pdfIn PDF document text
    • http://refitebi.epizy.com/jojo_weather_report_joestar_birthmark.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/immanuel_kant_philosophy.pdfIn PDF document text
    • http://bejuxufuvojofa.rf.gd/net_framework_3._5_win_8._1.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/dinuzifunesude.pdfIn PDF document text
    • http://nogafojomor.onlinewebshop.net/navimadepulolezowalibusem.pdfIn PDF document text
    • http://jiwuwusa.epizy.com/kozevuduroxagetorixoxom.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 8

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_off000102fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102FE 5324 bytes
SHA-256: 3b7d0402aea6a5295880dd02cea4716f8be7bd68ce73b01cd11ec0d22ae5415e
font_01_sfnt_off00011526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11526 11380 bytes
SHA-256: edb06b73387e80be10c63278a1b3d11f793cedda38aa5b72d90b691a1db33125

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