Malicious PDF — malware analysis report

Static analysis result for SHA-256 97a982e69fffb003…

MALICIOUS

PDF

71.7 KB Created: 2021-03-08 16:55:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 4822f542262d976a9d1d0244a9b4d20a SHA-1: 1ffdb99566fa592825ac7ced97a02b4d5d092a43 SHA-256: 97a982e69fffb003ccd908f8a5c502e56c9e7030c6c794d2c917958ecb495113
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, many of which point to potentially malicious domains, suggesting a link farm or phishing lure. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic indicate an attempt to redirect users to external sites, likely for credential harvesting or malware distribution. No scripts were extracted, but the overall structure and link farm behavior are indicative of a phishing or downloader campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.
  • 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://jumiwimov.ru/wix?keyword=heavener+public+schools+heavener+ok PDF link annotation
    • http://remontnatali.ru/91517495944w7zcq.pdfIn PDF document text
    • http://waxukapotaxakid.iblogger.org/73478912720.pdfIn PDF document text
    • https://cdn.sqhk.co/bopelara/jbigaU5/amtrak_auto_train_fares_schedules.pdfIn PDF document text
    • https://cdn.sqhk.co/tupizurelir/ed6ThhI/teddi_mellencamp_house_tour.pdfIn PDF document text
    • http://dombitarf.ru/joining_the_conversation_online_book23xv6.pdfIn PDF document text
    • http://salonvarna.com/60851273394u4yyd.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/imjejcT/33169024687.pdfIn PDF document text
    • http://italiahot.space/56563213860g788f.pdfIn PDF document text
    • https://petodudugagakot.weebly.com/uploads/1/3/4/6/134640630/0314605337d5944.pdfIn PDF document text
    • https://cdn.sqhk.co/kewukapugino/bjigAc5/34905377476.pdfIn PDF document text
    • http://mosomibilub.iblogger.org/rslogix_emulate_5000_add_module.pdfIn PDF document text
    • https://dajilifu.weebly.com/uploads/1/3/4/8/134891154/7507267.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/KgdMbPB/applocker_windows_10_pro_vs_enterprise.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dufemeg.epizy.com/shimano_di2_manual_r8070.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/das_attentat_sarajevo_1914_film.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/tell_me_about_yourself_sample_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/vevevaridazumodukejowi.pdfIn PDF document text
    • http://jagazuzigi.epizy.com/42226546078.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/how_do_i_describe_my_management_skills_on_a_resume.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/checkers_job_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/60919538093.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/how_many_covid_cases_in_orlando_florida_today.pdfIn PDF document text
    • http://bevonox.epizy.com/pokemon_emerald_rom_for_android_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/giliwudiropiximibapa.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_off0000db0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0D 5248 bytes
SHA-256: 94a95f17caf2a7262a81ca355aa4383d04dc0185414837b0cdda6630c8e55f25
font_01_sfnt_off0000ecda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECDA 10660 bytes
SHA-256: 6907c1d5431ac05391b7f86dac8afef0c5261bde10954e99a0dac9f4bc24bb9e

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