Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac1c8806417bb8b2…

MALICIOUS

PDF

72.4 KB Created: 2021-02-28 02:51:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 90c6490e633dee1d5595dfe95cfad7a4 SHA-1: ea2c394d3149eb12f457fd98b567c99881468c9d SHA-256: ac1c8806417bb8b296c8349cb62da41e6017bbc7f6873fffeda78b5d7c5b8d44
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/award?keyword=how+does+a+2+bank+battery+charger+work PDF link annotation
    • https://cdn.sqhk.co/muzorefu/XdYd5EA/rpg_for_destiny_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402944/normal_5ffda728e7e2e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_5ff17f43be572.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387573/normal_5fd8b164324e3.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/hhjf8iW/lizakotamixor.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefaxeker/iicgdjv/gatexowogegojapa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465687/normal_60348fbd13a24.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369333/normal_5fc8e64740bd0.pdfIn PDF document text
    • https://cdn.sqhk.co/keropolor/hevjjih/play_store_app_install.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454429/normal_600dd3ef8e4c1.pdfIn PDF document text
    • http://kaxidabifibag.iblogger.org/advertising_agency_web_template_free.pdfIn PDF document text
    • https://cdn.sqhk.co/rodisukipi/ibCgegj/repelizoron.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://rarefovukafulu.rf.gd/manuscript_templates_for_conference_proceedings_ieee.pdfIn PDF document text
    • http://kizuwopo.epizy.com/simple_handbells_sheet_music.pdfIn PDF document text
    • http://faxogego.epizy.com/driver_application_letter_sample.pdfIn PDF document text
    • http://porokeziz.rf.gd/bs_player_codec_android.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_off0000d15f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD15F 5400 bytes
SHA-256: c9ac128d51492396bc18c129869e638694b5ff22633cadb3164cd71204a66c52
font_01_sfnt_off0000e3c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C3 10192 bytes
SHA-256: 1e77025f825e9e776ab6512304d306b4a33ea9f62af65eef046c712daebcb59a
font_02_sfnt_off00010689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10689 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3