Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d00beaee3ebebdb…

MALICIOUS

PDF

87.3 KB Created: 2021-02-25 17:31:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 823cfd605aee46455e1d180495a06444 SHA-1: 8c65c3b5ba2b2556a353538b9f19c316557c2009 SHA-256: 8d00beaee3ebebdb1a5b010d530b2664a0baae2fcf99e4529dee8a350694cd10
184 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains or using URL shorteners, indicating a link farm designed for SEO manipulation or phishing. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and numerous external URLs point towards a malicious redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9564

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://baarspo.ru/award?keyword=hoover+windtunnel+3+air+steerable+manual PDF link annotation
    • https://cdn.sqhk.co/sirazisiluz/jijcTMl/table_tennis_3d_ping_pong_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zapimafe/iRkKhjv/34563261551.pdfIn PDF document text
    • https://cdn.sqhk.co/zuronenom/ahfXifV/funny_song_ringtone_download_pagalworld.pdfIn PDF document text
    • http://vopugixeroramox.medianewsonline.com/php_html_file_to_string.pdfIn PDF document text
    • https://zalinojawovuga.weebly.com/uploads/1/3/4/8/134886974/darizaja.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/37423687732.pdfIn PDF document text
    • https://cdn.sqhk.co/suxavawudomo/huha0ie/8081797301.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/0OWghVh/71486745621.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/Ojcegje/the_pirate_caribbean_hunt_hack_apk_2020.pdfIn PDF document text
    • http://xufelaketodo.getenjoyment.net/37636060157.pdfIn PDF document text
    • https://cdn.sqhk.co/supetuzitepi/ghEgfDL/kivubatibemepojebememux.pdfIn PDF document text
    • https://cdn.sqhk.co/sokaxopoje/Qbohaia/marco_prime_menu_prices.pdfIn PDF document text
    • https://kunubukom.weebly.com/uploads/1/3/4/5/134599245/2986784.pdfIn PDF document text
    • https://legunumazonum.weebly.com/uploads/1/3/4/4/134455594/7285732.pdfIn PDF document text
    • https://cdn.sqhk.co/virapazetif/g8u6hjl/rayman_jungle_run_apk_obb.pdfIn PDF document text
    • https://cdn.sqhk.co/tevunufoba/h9vvmzO/1532057521.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bukinajomo.epizy.com/76427747082.pdfIn PDF document text
    • http://tuwutexo.onlinewebshop.net/probability_of_simple_and_compound_events_worksheet.pdfIn PDF document text
    • http://timubapuzaza.rf.gd/do_you_capitalize_associate_professor.pdfIn PDF document text
    • http://vejegaba.atwebpages.com/tagumonibos.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000146b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146B2 5388 bytes
SHA-256: 2cc6a13b1274622513712fa009c7eb512e6f9cd2eb5a8c5a468bb33f9ef300b9

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