Malicious PDF — malware analysis report

Static analysis result for SHA-256 689d37954cfe21e1…

MALICIOUS

PDF

83.6 KB Created: 2021-03-13 13:51:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b11adde6b76049b021b8b2507ecb51ef SHA-1: 926e87782b827b268d2a9b2729f8941665732117 SHA-256: 689d37954cfe21e1b066b42b182dd2b839909e98f6257ac0537049cd65028c87
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 0.9961

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 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://ponafet.ru/123?utm_term=facebook+videos+1080p PDF link annotation
    • https://cdn.sqhk.co/derebeduno/vhdg03A/black_skull_wallpaper_4k.pdfIn PDF document text
    • https://fabupegux.weebly.com/uploads/1/3/4/6/134689396/betapape-lalineko.pdfIn PDF document text
    • https://gilurabad.weebly.com/uploads/1/3/0/7/130775641/8634273.pdfIn PDF document text
    • http://zomuregunaradu.iblogger.org/pc_games_for_android_phone.pdfIn PDF document text
    • https://cdn.sqhk.co/bevoletef/hghbCHX/digital_media_marketing_degree_online.pdfIn PDF document text
    • https://bebibamo.weebly.com/uploads/1/3/1/4/131438385/sixadab.pdfIn PDF document text
    • http://pevazaw.mypressonline.com/sawagusebab.pdfIn PDF document text
    • http://pedumerik.sportsontheweb.net/how_to_program_a_chamberlain_garage_door_remote_953cd.pdfIn PDF document text
    • https://xoregofejaba.weebly.com/uploads/1/3/4/6/134651656/94a56ef.pdfIn PDF document text
    • https://cdn.sqhk.co/lugizumevemu/iv4ihhU/crayfish_anatomy_worksheet_answers.pdfIn PDF document text
    • https://nakusiwikabudu.weebly.com/uploads/1/3/4/9/134904560/vagof-kukelemelifaji.pdfIn PDF document text
    • https://rudiduwusoxu.weebly.com/uploads/1/3/4/4/134445317/lunorigupezebise.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/fhi1Emd/mermaids_in_haiti_thread.pdfIn PDF document text
    • http://detonicinitalia.website/22427998898bc8tm.pdfIn PDF document text
    • http://trysalon.xyz/guess_the_brand_cheats0tewr.pdfIn PDF document text
    • http://outputqwvk.space/240201357605he5n.pdfIn PDF document text
    • http://fakutuzogazu.sportsontheweb.net/90518404295.pdfIn PDF document text
    • http://fodasirosawazim.22web.org/blog_del_fotografo.pdfIn PDF document text
    • http://aicberg.net/japanese_alphabet_letters_a-_z_englishjmxcu.pdfIn PDF document text
    • http://trylait.pro/how_to_make_candy_canes_out_of_pool_noodles6g4dm.pdfIn PDF document text
    • https://disadaniti.weebly.com/uploads/1/3/4/4/134463451/tizuforane-zabajapivonimul.pdfIn PDF document text
    • http://vorusobowa.66ghz.com/64531454447.pdfIn PDF document text
    • https://cdn.sqhk.co/revogonesox/Kjeja4W/40587622744.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bepenopivite.epizy.com/fuvebedopi.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/ponez.pdfIn PDF document text
    • http://bupikizatigog.rf.gd/ludhiana_weather_report.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_off00010800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10800 5544 bytes
SHA-256: d9552b59bd1cb1db52efee351ca242730f233424410055b9769ae797a570a245
font_01_sfnt_off00011af5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF5 11084 bytes
SHA-256: cdbbccde26bbee15bd8754631facd92c9e9e7899e351699a547adab1ac042065

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