Malicious PDF — malware analysis report

Static analysis result for SHA-256 225c583ca4ea897d…

MALICIOUS

PDF

62.5 KB Created: 2021-02-10 18:33:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e862695cf2aef85357cff744f5413f5b SHA-1: b2625b17399cd6bb80ee094e8948d3b814288234 SHA-256: 225c583ca4ea897debb01a43196b52c9631a29dd5b34b27428899c353810b11c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://leonvi.ru/123?utm_term=1042+s+form+2014 PDF link annotation
    • https://cdn.sqhk.co/xawefigi/eOyihhx/kievan_rus_world_map.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/sheIClc/lojugunikaja.pdfIn PDF document text
    • https://cdn.sqhk.co/doxurozupu/jjhjfhg/dinezoro.pdfIn PDF document text
    • https://rogejizerabori.weebly.com/uploads/1/3/4/7/134763318/mulale_woxoxolisane.pdfIn PDF document text
    • https://cdn.sqhk.co/rekewuneboxu/gidih9G/sugonesegimilur.pdfIn PDF document text
    • http://zoxifowivo.iblogger.org/74103088491.pdfIn PDF document text
    • https://tubuzitobez.weebly.com/uploads/1/3/4/1/134108618/dorekumokegun.pdfIn PDF document text
    • http://furafofuvobomu.22web.org/burger_king_coupon_mai_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/wenoxavawo/zCghii3/kingdom_builders_worship_center_pompano_beach_fl.pdfIn PDF document text
    • https://povurumupun.weebly.com/uploads/1/3/4/8/134884194/wiguwonefif-javorig-kevubexaxe.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/sjChgj8/32659808616.pdfIn PDF document text
    • https://gefimopawudomew.weebly.com/uploads/1/3/4/0/134017284/buwogi.pdfIn PDF document text
    • https://cdn.sqhk.co/jujadiziga/hdViR2p/13549271183.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kugibujupedo.rf.gd/sujoxaxikojarutid.pdfIn PDF document text
    • http://voniziveput.rf.gd/sogorovivatawijujegobavu.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_off0000bb09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB09 4988 bytes
SHA-256: 9462aa4bbb9b452a6fe14ec10dca450ac41da04f42995cc668f6c1e19e01cf12
font_01_sfnt_off0000cbfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBFB 9772 bytes
SHA-256: 423b07eca7b3487622144839f1a7a2353bf8d2964b099fac947d70e07d917c97