Malicious PDF — malware analysis report

Static analysis result for SHA-256 04e6218f9c407e74…

MALICIOUS

PDF

89.6 KB Created: 2021-03-23 04:37:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 6d1925ec4c396ef388f3aa5f5275e445 SHA-1: c5b75ebd8816d77ec08a38b0e3a5292a2445b0a5 SHA-256: 04e6218f9c407e7433b33e5f410c3d7e8bd6459bb8679fa6bb0041629d981b23
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs pointing to suspicious domains, indicating a phishing or malware distribution attempt. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic and the high ML score further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, likely as part of a spearphishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://ponafet.ru/wix?keyword=tomb+of+diderius+pdf PDF link annotation
    • http://sfr-webmail.com/17786405280q9h55.pdfIn PDF document text
    • https://cdn.sqhk.co/fafegatoko/jez54KY/air_traffic_controller_strike_2019.pdfIn PDF document text
    • http://mesretly.xyz/damisebodula5ier0.pdfIn PDF document text
    • http://findssldz.xyz/mainstays_student_desk_instruction_manual7d5kl.pdfIn PDF document text
    • http://torchland.xyz/borisodibalu9g7ly.pdfIn PDF document text
    • https://cdn.sqhk.co/vabalogu/gh5iam3/call_of_duty_warzone_modern_warfare_sign_up.pdfIn PDF document text
    • http://topcabinets.xyz/dipirdlzps.pdfIn PDF document text
    • https://cdn.sqhk.co/fogizotufijo/ihggbhi/canon_eos_r_software.pdfIn PDF document text
    • http://presente-top.store/76939212548ivncx.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimijexap/md9jfhb/wagekelezivis.pdfIn PDF document text
    • http://olivamebel.com/single_player_card_gamest9wx6.pdfIn PDF document text
    • http://kmplitka.shop/36560757074f4z4g.pdfIn PDF document text
    • http://polfact.site/nadifokipixuvofuy26ss.pdfIn PDF document text
    • http://mavpa.fun/elektrotechnik_symbole50z5w.pdfIn PDF document text
    • http://cparta.moscow/avengers_infinity_war_latino_mega0de9k.pdfIn PDF document text
    • https://cdn.sqhk.co/peruvereraba/jiXrhao/zesudofi.pdfIn PDF document text
    • http://universityru.fun/the_66_laws_of_the_illuminati_secrets_of_successujj82.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tazopaju/any_video_converter_ultimate.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/way_of_the_peaceful_warrior_true_story.pdfIn PDF document text
    • http://puzasapexuwuju.epizy.com/whatsapp_profile_pic_in_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/64735204840.pdfIn PDF document text
    • http://vamavom.epizy.com/mobile_phone_repair_course.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/zetewesotevovo.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_off000122be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122BE 5032 bytes
SHA-256: 5698463cd52d8954ab375d2623e278b8516d459bdec3dc0f5c34b576fe257cb1
font_01_sfnt_off000133c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133C5 10932 bytes
SHA-256: a7ea1973bda22cc03f9fd518b31985b2960a5e738950c0478c890ccef1025897

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