Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b1fed68e90b29a7…

MALICIOUS

PDF

65.6 KB Created: 2021-03-06 12:56:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8ad97bfcc9617f037b0f8fdcbc44a6c7 SHA-1: 40b979d29103e279b1028d00fd2836f68e7ae63a SHA-256: 1b1fed68e90b29a786825a84080d2f9dd208e3c7e158e21af4dd8c959333732f
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://lozipotod.ru/award?keyword=problemas+en+el+paraiso+zizek+pdf PDF link annotation
    • https://cdn.sqhk.co/kelufuro/iibtrie/monster_girl_maker_2_apk_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/legusovej/gJ6Khhe/70892756536.pdfIn PDF document text
    • https://doxuginuf.weebly.com/uploads/1/3/5/3/135346615/wuxogenavag-legiluli-wobuv-paxarepesu.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/Ligigie/vewaru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_6025f1346cc84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445890/normal_602fd7e539348.pdfIn PDF document text
    • https://cdn.sqhk.co/kubafipefo/ZifghWA/elifoot_2002_registrado.pdfIn PDF document text
    • https://cdn.sqhk.co/gewanunu/fgc0jeF/nemufe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484994/normal_5fd6360928a9c.pdfIn PDF document text
    • https://cdn.sqhk.co/mekizojo/ajfD62B/kogorolo.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/1hagfuY/20685803470.pdfIn PDF document text
    • https://kuwomodelinero.weebly.com/uploads/1/3/0/7/130776449/gasebumedukel.pdfIn PDF document text
    • https://cdn.sqhk.co/noxomosanena/ihxhh7J/asteroid_coming_towards_earth_june_2020.pdfIn PDF document text
    • https://judexesadizit.weebly.com/uploads/1/3/0/7/130738912/sokirif.pdfIn PDF document text
    • https://cdn.sqhk.co/dajuzafum/jbhfghX/xavuzemokelefutifizufuf.pdfIn PDF document text
    • https://cdn.sqhk.co/linidivez/Qgf2pl4/12021210398.pdfIn PDF document text
    • https://fonekukiko.weebly.com/uploads/1/3/5/3/135393218/2909495.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369153/normal_5ffc49b91958d.pdfIn PDF document text
    • https://mazekijaxok.weebly.com/uploads/1/3/1/4/131453602/4afd4.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/nagudo/answer_key_mpsc_2019_psi.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/59025359922.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_off0000c237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC237 5440 bytes
SHA-256: da079f57db7a0eed859703bf37da931d7c94c19e218e08c433218a568133b288
font_01_sfnt_off0000d49f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD49F 10528 bytes
SHA-256: c657af28eefa32ca835ca7176dc445eb684a669a80833d87b4388701ea4b4150

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