Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b933e72476ea64…

MALICIOUS

PDF

77.6 KB Created: 2021-02-15 23:08:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 04002fc39ada05c1ec34e59ed1c46591 SHA-1: 4aef47ce4b3271287e1ffcbefb46621d8b50c05b SHA-256: d0b933e72476ea643b8f0abe4a48e2b5621651d12886dc3d88b222edcfcf773a
194 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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wb?keyword=product%20recall%20procedures%20template In PDF document text
    • https://cdn.sqhk.co/matijamaj/nDjbiae/multigba_s_beta_online_multiplayer_gba_emulator.pdfIn PDF document text
    • https://cdn.sqhk.co/pobopuwubox/iaNZjfI/48801561472.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366628/normal_5fce5b149e031.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/UYgijcc/tik_tok_videos_online.pdfIn PDF document text
    • http://ag-management.space/all_recipes_baked_potato_casserolep7toj.pdfIn PDF document text
    • https://cdn.sqhk.co/lixejudazeza/uZiihdf/gegifefi.pdfIn PDF document text
    • https://cdn.sqhk.co/wanukawuwota/YQaOKLb/63553079733.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416305/normal_6022ca6fd064b.pdfIn PDF document text
    • http://choosemadam.site/propranolol_reviews_for_performance_anxiety98pas.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/FsifOia/freemcserver._net_upgrade_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/fematixub/hhZghgf/86543217536.pdfIn PDF document text
    • http://busivel.xyz/glossary_accounting_terms7izw4.pdfIn PDF document text
    • https://cdn.sqhk.co/besogevipadi/cm4wShj/sigiseworujuju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421341/normal_6019d55ac3b92.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/liwafo/copperplate_english_roundhand_practice_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/vewipalukezex.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/attestation_form_railway_alp.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/video_momoland_boom_boom_dance_mix.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_off0000f220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF220 5220 bytes
SHA-256: 23776b975f0fd0252fbe60c66621b4b6df19c2521ba02ca97bb4298c1e84f9b1
font_01_sfnt_off000103cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103CC 10964 bytes
SHA-256: b0833392b45b8957189ffd549dd6e366b6c53f66f38c94a7011e81cbf9216e9c

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