Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdbc91723a119ef8…

MALICIOUS

PDF

70.0 KB Created: 2021-02-27 16:05:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 74d91345ad61818b6a42ad64e546f431 SHA-1: 5f9d527c3c367797f8a295009f5343442f49a14f SHA-256: fdbc91723a119ef80005370a714ecb6333256ebb387bcc184bd50623573ed0c3
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/award?keyword=every+man%2527s+battle+pdf+free PDF link annotation
    • http://vugijow.iblogger.org/volopijaxowakasu.pdfIn PDF document text
    • https://xisiwifuroki.weebly.com/uploads/1/3/5/3/135323104/f4449c8.pdfIn PDF document text
    • http://khareedforosh.com/rejuxik2vqe.pdfIn PDF document text
    • https://cdn.sqhk.co/sowojusawepu/fcLichc/motogosewutaxetutokali.pdfIn PDF document text
    • https://kenojulovananav.weebly.com/uploads/1/3/4/0/134016885/lisojem.pdfIn PDF document text
    • https://dasujodiket.weebly.com/uploads/1/3/4/4/134481559/7214670.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/cciefgj/teamviewer_quicksupport_software_for_pc.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/rozebofukixus/bored_or_boring_exercises.pdfIn PDF document text
    • http://luvabokinoleg.onlinewebshop.net/vutovisofizex.pdfIn PDF document text
    • http://nejarisiwudu.atwebpages.com/jefovibiluteso.pdfIn PDF document text
    • http://jopubiv.rf.gd/choir_warm_ups_fun.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/ag-_ux180_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/kixogevabetikutazoxom.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_off0000d51d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD51D 5480 bytes
SHA-256: 5ee903bb479e95a5c724440752a80238dde9baf437514afc4934bed00e6a1808
font_01_sfnt_off0000e7b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B9 10308 bytes
SHA-256: 77da9f791c212c79910b248eda06d83fe71455bce76510b640c06347d9c9cda7