Malicious PDF — malware analysis report

Static analysis result for SHA-256 e00c26bdec7bfa52…

MALICIOUS

PDF

79.7 KB Created: 2021-04-26 15:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 3034adee3a5aa5178cd3543fa60a9907 SHA-1: fa71cd55e07a9ca35ecaad218061f00a056af5c6 SHA-256: e00c26bdec7bfa52e8069e2862bc9688e4d76cf7a28de55a5e0246813e4c5f9c
134 Risk Score

Malware Insights

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

The PDF contains embedded URLs and heuristics indicate it is a link farm designed for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of urgency language further supports a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/strik?utm_term=comtrend+ar-5381u+password PDF link annotation
    • http://pebifakonek.sportsontheweb.net/metakewirexusutexez.pdfIn PDF document text
    • https://cdn.sqhk.co/zivunegas/DicrOja/48293554362.pdfIn PDF document text
    • http://fakutuzogazu.sportsontheweb.net/12570450775.pdfIn PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/eMhfjcm/motor_world_car_factory_cheats_donuts.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/381WigY/logo_quiz_answers_level_29.pdfIn PDF document text
    • http://goxamid.mypressonline.com/bundesliga_spielplan_2020_19_rckrunde.pdfIn PDF document text
    • http://liwurivosopap.medianewsonline.com/6794290122.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2192d4ee-4fab-4656-8618-7027ea2a1d6a/fuvinuroz.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/can_you_mod_dark_souls_3_on_xbox_one.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/texiti.pdfIn PDF document text
    • http://sudexixurijaxoz.atwebpages.com/ctet_paper_1_syllabus_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df486a56-ef0f-47a3-aa04-e564bd4bd305/81980350288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85c687b0-c583-4ace-9373-f0b13c7eb1f7/sex_offenders_in_brownsville_texas_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee4ba214-34e3-4361-b9fe-63f315b4f100/mopesinexamisopipaf.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/netgear_wgr614v9_tomato_firmware.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72692eb3-2c5f-4b11-96b0-2f44c4973adf/kosexubewatabuduwibed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/124cc4c8-4bdb-4407-87a9-567327d50399/how_to_apply_a_vinyl_wall_sticker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3226c740-e129-4d7d-b9d2-b76d988a1604/harry_potter_and_the_philosophers_stone_book_chapter_14.pdfIn PDF document text
    • http://xulisaj.rf.gd/apollo_munich_health_insurance_premium_chart_2020.pdfIn PDF document text
    • http://semisoriguregix.epizy.com/78322772092.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca721639-6203-479f-af7c-588238e9c567/sufoji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35a54d50-4cca-4b5e-b4d1-0ef0ebae569a/does_apple_have_an_ebook_subscription.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/912cbd53-6e07-4ba7-94b1-7643b8f39da9/who_made_up_the_2nd_estate_of_pre-revolutionary_france.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_off0000f7f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F3 5636 bytes
SHA-256: 31c5d127ce616ff7837094b22628a50542ee257df9cd8959d2ec4fc1ffe6ac2b
font_01_sfnt_off00010b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1F 11272 bytes
SHA-256: 5aad4edac903df233984e0bc24fa64c6c60d9c4e16c66536f89e7acece578164