Malicious PDF — malware analysis report

Static analysis result for SHA-256 c63d9ddabd34700a…

MALICIOUS

PDF

71.5 KB Created: 2021-01-26 09:40:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 60970789e85ce37c8594bf71d902bf2f SHA-1: 465309910addd472ac1f428204508223db513b3c SHA-256: c63d9ddabd34700a3962e15c7cb79ee6403ce7ca8d4a2e446e0faef4191b0e03
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/123?utm_term=opelika+city+schools+board+of+education PDF link annotation
    • http://logmeinnow.xyz/roblox_support_phone_number80yv5.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/gighjbJ/totiwu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369771/normal_5fe802423d340.pdfIn PDF document text
    • http://rineset.xyz/weruvumaxapazak8ixx.pdfIn PDF document text
    • https://rewajugelawuz.weebly.com/uploads/1/3/0/7/130738764/wudixidira-pafebakavewo-dejoremetu-fubuzap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479921/normal_5fdf359d25ad6.pdfIn PDF document text
    • https://cdn.sqhk.co/zegofurop/aidjchl/tixedarabasakibogovuwewus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408004/normal_5fe62911c7f4e.pdfIn PDF document text
    • http://rollernefritmassage.xyz/58047011419gvaub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374847/normal_5feb632ca20c5.pdfIn PDF document text
    • https://cdn.sqhk.co/pirasemofoge/dhiQGji/arkham_horror_card_game_investigator_tier_list.pdfIn PDF document text
    • https://cdn.sqhk.co/bugolajoxodu/n2nibjg/davuxejodutifojoro.pdfIn PDF document text
    • https://lodavoxi.weebly.com/uploads/1/3/4/5/134505118/bipor.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/6HIK8ig/pomudupixejikiwiludakij.pdfIn PDF document text
    • https://fazotevepokok.weebly.com/uploads/1/3/4/8/134865813/kaxaz_kaliwatasid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dbfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBFC 5576 bytes
SHA-256: b5e9ec96d31e22612c41d92912248acff6cbfcf212a48e25248647986522421c
font_01_sfnt_off0000eee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE5 9960 bytes
SHA-256: ea5ff443142c3caa3eeee88085518f91c86910c5678ca5d3522588a7dee86b5d