Malicious PDF — malware analysis report

Static analysis result for SHA-256 13742c5cd102e0c5…

MALICIOUS

PDF

68.6 KB Created: 2021-02-22 22:48:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6595e5b39fe7e900704e83087affd0ef SHA-1: 1de79c8bcaed8b0e4c00ca33731b1f8db5b14fa7 SHA-256: 13742c5cd102e0c5637f41b3de0b77356b2226bbc5380127539f7c3ec7848efa
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=incubus+fillmore+charlotte+nc In PDF document text
    • https://lajutiruwogow.weebly.com/uploads/1/3/4/5/134585316/99a4eb87.pdfIn PDF document text
    • https://nagenexam.weebly.com/uploads/1/3/0/7/130776307/bomezedijafewo_jubibo.pdfIn PDF document text
    • https://wozexofinudere.weebly.com/uploads/1/3/5/9/135984457/6823118.pdfIn PDF document text
    • https://duvirimak.weebly.com/uploads/1/3/4/6/134603536/gukizukabosetesijo.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/ifgeU7F/gartner_magic_quadrant_cloud_contact_center.pdfIn PDF document text
    • https://cdn.sqhk.co/lokutibu/jdjbQRH/ski_jump_game_miniclip.pdfIn PDF document text
    • https://bugajujifupub.weebly.com/uploads/1/3/4/8/134894919/6244958.pdfIn PDF document text
    • https://xatoxelal.weebly.com/uploads/1/3/1/4/131482937/860f61a.pdfIn PDF document text
    • https://nakagikirowi.weebly.com/uploads/1/3/2/6/132695306/rebukuzujesaleneji.pdfIn PDF document text
    • https://cdn.sqhk.co/lilapanorup/ifDggfB/jaloku.pdfIn PDF document text
    • https://tadomowiwelam.weebly.com/uploads/1/3/4/7/134744739/8ba0fe7.pdfIn PDF document text
    • http://sebekeruxa.iblogger.org/baixar_livro_genetica.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://lulevewutowa.epizy.com/direct_and_reported_speech_examples.pdfIn PDF document text
    • http://bawozejowavonot.rf.gd/papusofobejulomoz.pdfIn PDF document text
    • http://suredutika.rf.gd/lavesapevivapitipava.pdfIn PDF document text
    • http://runoxujozu.rf.gd/meiosis_matching_review_worksheet.pdfIn PDF document text
    • http://sajumapudetuji.rf.gd/11814962770.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_off0000c7d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D1 5080 bytes
SHA-256: 27ecdd30099ea1925676c62e531c67fa11007412af748bfb6ad8dbb923d4dc8f
font_01_sfnt_off0000d8d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D5 8932 bytes
SHA-256: 7a58cdbf0552953ef76d4194aa674b04546a4189e17012c5d91a3c659e8b4c77
font_02_sfnt_off0000f779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF779 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361