Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ddc26bcc5b1f766…

MALICIOUS

PDF

70.2 KB Created: 2021-03-10 17:44:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 70f001c5fa5ef01730f8bf542411f309 SHA-1: eecf96d15e7a2253322e0edf46006eda11348360 SHA-256: 1ddc26bcc5b1f766cb7cbdc21fd732021a13487c9aa3a716f1b82dd70cc0fc61
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or redirection scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high likelihood of malicious intent, likely to distribute further malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://kuzutuzo.ru/wix?keyword=garmin+streetpilot+c330+not+acquiring+satellites PDF link annotation
    • https://cdn.sqhk.co/munoforifuso/hhc8BFx/nomufakerimix.pdfIn PDF document text
    • https://cdn.sqhk.co/muwanije/uhh4ji6/27924300245.pdfIn PDF document text
    • https://cdn.sqhk.co/visobipibe/GhjihUW/the_ordinary_serum_for_whiteheads_and_blackheads.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476768/normal_603a636dcbe1c.pdfIn PDF document text
    • http://reduslim-italy.site/sony_reader_apktzgrk.pdfIn PDF document text
    • http://differencecheats.net/problemas_de_porcentajes_encadenados_2o_esosu1bm.pdfIn PDF document text
    • http://theraisins.pro/how_to_troubleshoot_air_conditioner_not_turning_on6m5f9.pdfIn PDF document text
    • https://cdn.sqhk.co/temirikuji/gheTsQ3/1861010066.pdfIn PDF document text
    • https://cdn.sqhk.co/zivupowixede/hejQghH/51715647490.pdfIn PDF document text
    • https://cdn.sqhk.co/nujidegowupi/6SnjfJX/cool_hockey_iphone_wallpapers.pdfIn PDF document text
    • http://loveworld.club/how_to_check_gpa_on_infinite_campus_student5ln1n.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/ddahgge/latest_us_political_news.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404738/normal_5fef0ccaa2295.pdfIn PDF document text
    • http://choosemadam.site/what_to_say_when_you_talk_to_yourself_book8bk36.pdfIn PDF document text
    • http://jutereli.iblogger.org/activist_learning_style.pdfIn PDF document text
    • http://bloomwithdeanna.com/saderagagivomoxasovawasipo0s36.pdfIn PDF document text
    • http://xsafak.com/how_do_i_fix_my_ge_dishwasherg23lp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490376/normal_602ac457cb428.pdfIn PDF document text
    • http://afracheat2.xyz/how_much_does_it_cost_to_send_your_dog_to_obedience_schoolbmspc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423429/normal_60354802cbc31.pdfIn PDF document text
    • https://cdn.sqhk.co/konanetufuda/henhfhf/derwent_metallic_water_soluble_pencils.pdfIn PDF document text
    • http://zepidulogi.22web.org/angles_in_triangles_and_quadrilaterals_worksheet.pdfIn PDF document text
    • http://ptmonline.ru/583465906490azs9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fatijilipoto.epizy.com/disney_world_park_times_february_2020.pdfIn PDF document text
    • http://lonozixugixapap.epizy.com/cps_reporting_in_washington_state.pdfIn PDF document text
    • http://bunakakivukutus.epizy.com/3-_1_practice_exponential_functions_answer_key.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_off0000d667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD667 5716 bytes
SHA-256: 4920180c6a694cfe594999342383b9180e97bd769e42099526d8f762b5eff7db
font_01_sfnt_off0000e9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C7 9620 bytes
SHA-256: 3dc0a4c2dd26f482c7621cfd126972d2b8880db4bca0efcce3609a54f3fd270e