Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb70cc167c2b8a21…

MALICIOUS

PDF

72.0 KB Created: 2021-04-04 09:40:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 3685210fd1605a9199ee17060d363abc SHA-1: bb9ee6aa93f81493d9a2ac09ccde18308244ae07 SHA-256: eb70cc167c2b8a2192e28e71331b1e4695470c8737e57b4976337d2e0bda0a42
126 Risk Score

Malware Insights

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

The PDF contains numerous links to disposable domains, many of which are used in a link farm pattern. The document body, though heavily obfuscated, appears to be a lure related to 'sax repair near me', directing users to a malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://lozipotod.ru/strik?utm_term=sax+repair+near+me PDF link annotation
    • http://mamafiposorugul.sportsontheweb.net/82094073695.pdfIn PDF document text
    • http://xxlmature.site/16564758019t8rvx.pdfIn PDF document text
    • http://nudistoff.club/makupodetiwejekeviv242l.pdfIn PDF document text
    • http://wisiripivi.22web.org/7193877896.pdfIn PDF document text
    • http://kvrovk.xyz/543869115340mnso.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/5MeUhew/23720551646.pdfIn PDF document text
    • http://thelandofbadideas.com/nupovarenokamosowafixosisiltv7.pdfIn PDF document text
    • https://cdn.sqhk.co/kinifukix/EicSXje/loopers_the_movie_theaters.pdfIn PDF document text
    • http://verifybadgesbusiness.com/cabotage_act0nl4r.pdfIn PDF document text
    • http://whitetwo.space/transformer_bifilar_windingci6d0.pdfIn PDF document text
    • http://cmb-accueil.com/86868895206tiezw.pdfIn PDF document text
    • http://look-hotel.com/4427263239v74ve.pdfIn PDF document text
    • http://bitalotava.scienceontheweb.net/tracing_cvc_words.pdfIn PDF document text
    • https://cdn.sqhk.co/gatezoru/hcjewhg/86228975094.pdfIn PDF document text
    • http://visiblawty.com/vazutijireditivibagoxsguq.pdfIn PDF document text
    • http://dagowaxike.22web.org/mibasovujazanok.pdfIn PDF document text
    • https://cdn.sqhk.co/gebitasixa/dCJQieu/kung_fu_rabbit_full_movie_english.pdfIn PDF document text
    • https://cdn.sqhk.co/vinasujitupe/LCWibif/68771735095.pdfIn PDF document text
    • http://imm-shoes2.club/best_android_game_engine_3dp7ma0.pdfIn PDF document text
    • http://ergors.space/6800272640uoyme.pdfIn PDF document text
    • http://sukutoxuwurif.mywebcommunity.org/how_to_reset_check_engine_light_on_2014_nissan_pathfinder.pdfIn PDF document text
    • http://nitafefuxomod.22web.org/how_to_save_latex_as_mac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://famomijis.onlinewebshop.net/belajar_program_arduino.pdfIn PDF document text
    • http://perorudo.epizy.com/36308027267.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d12f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD12F 4524 bytes
SHA-256: d5541f659984f864cea9a482fa3550fd0790180e4463c182028a7a4e9910b6b1
font_01_sfnt_off0000e05b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05B 10664 bytes
SHA-256: 0fee42ecead388a94a9a90e1b2f06939b9ad9194f107ec011fc069bd2ec5bbda
font_02_sfnt_off000104e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E2 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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