Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b4b0429caaeae3e…

MALICIOUS

PDF

87.2 KB Created: 2021-03-04 09:59:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d51b399531234da61630f70356c4733e SHA-1: f788be67cb4372e4b72e899b49aaab57b2047f93 SHA-256: 5b4b0429caaeae3ecc5432901e7e7b9d91426615a85752b4e2c1a72ddc27acb0
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://zajinet.ru/wb?keyword=my%20grandmother PDF link annotation
    • http://wonujabazuvopa.22web.org/schindler_s_list_sheet_music.pdfIn PDF document text
    • https://zawasofolebu.weebly.com/uploads/1/3/4/9/134902788/2ddc6e5d4b.pdfIn PDF document text
    • https://xigakoter.weebly.com/uploads/1/3/1/3/131379919/6096937.pdfIn PDF document text
    • https://gikesusemu.weebly.com/uploads/1/3/4/7/134775173/zokiruza-finigenivefove-xamomelali.pdfIn PDF document text
    • http://copyright-infringement.business/which_traits_should_virtual_team_members_haveb89f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409819/normal_6032e9c091948.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381964/normal_604029a967ad6.pdfIn PDF document text
    • http://afracheat6.xyz/zepizobalebay8irc.pdfIn PDF document text
    • https://pinabufibofux.weebly.com/uploads/1/3/2/6/132682338/1bbdb073ff7.pdfIn PDF document text
    • http://helpcontactform.com/stardew_valley_growing_grassf067v.pdfIn PDF document text
    • http://abreudesigns.com/86341966144zyq8u.pdfIn PDF document text
    • http://nafugelinev.iblogger.org/33333037043.pdfIn PDF document text
    • http://taxilozevuj.iblogger.org/bashan_xplode_250_service_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496014/normal_6005f87d68a44.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500430/normal_5ffe3029dec23.pdfIn PDF document text
    • https://wabezapodila.weebly.com/uploads/1/3/1/4/131437306/jowumolatixof-kiwapejifukopug-nudawilixirako.pdfIn PDF document text
    • http://zefupubodagome.22web.org/3d_printer_diy_how_to_build_your_own_3d_printer_from_scratch.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nomekerileme.epizy.com/wowhead_warrior_leveling_guide_classic.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_off000111b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111B1 5804 bytes
SHA-256: 6f79c208f386c14f156a6027f4e4a223415fea5f226261351865754bb7bf7722
font_01_sfnt_off00012567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12567 12964 bytes
SHA-256: 83e69ff7993aaac82bc1da4e3942eab0a2f2fdf005051cb4d7a827d33857630a