Malicious PDF — malware analysis report

Static analysis result for SHA-256 50ab24a392e4b423…

MALICIOUS

PDF

69.3 KB Created: 2021-02-12 19:26:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e959bcd8a7979d9e1f401510f0ed995b SHA-1: 2d559dd24147b8a0e6d85bbfcc537069065a7dc2 SHA-256: 50ab24a392e4b4236c91d470c5a0a2dc5c9580e5df51d522562d054dd27be245
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wb?keyword=battle%20of%20the%20bastards%20full%20episode PDF link annotation
    • https://timonuwek.weebly.com/uploads/1/3/4/3/134383578/gomikoludixowu.pdfIn PDF document text
    • https://boxomuti.weebly.com/uploads/1/3/4/0/134016719/nefixi_zidirokenajuru.pdfIn PDF document text
    • https://tinozuxitijerel.weebly.com/uploads/1/3/4/5/134528375/zadebubizow-muvoxijisame-vibidu-negax.pdfIn PDF document text
    • https://fezapatinegu.weebly.com/uploads/1/3/4/2/134266508/tulomirobu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379035/normal_5fe933d7a4f4a.pdfIn PDF document text
    • http://seamanygau.best/wulesedabijugofujavhg.pdfIn PDF document text
    • https://kewekekonuv.weebly.com/uploads/1/3/4/7/134732265/d3efd735.pdfIn PDF document text
    • http://physcoo.com/download_game_street_racing_3d_mod_apk_homeomw3a.pdfIn PDF document text
    • https://tenosufude.weebly.com/uploads/1/3/1/4/131455069/9910166.pdfIn PDF document text
    • http://prizinsta.online/altronix_al400ulacmz1bdk.pdfIn PDF document text
    • https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/9892188.pdfIn PDF document text
    • https://lefafikof.weebly.com/uploads/1/3/0/9/130969708/5515218.pdfIn PDF document text
    • http://onlinetiser.website/anatomie_de_l_articulation_du_coude5tlyq.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/muxegeza/somusabemijarakinud.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/14450715206.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_off0000ce5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE5B 5316 bytes
SHA-256: d757ad27421d42e887529d4b7992eed988b53a9d08fa3830c664ff48b0fcc44a
font_01_sfnt_off0000e065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE065 12180 bytes
SHA-256: a28c9c63454243c2a1a5cc040c7fdeeea43d35411ad44acaee4dd9bb5ca546aa