Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b534a176df88faf…

MALICIOUS

PDF

65.2 KB Created: 2021-02-24 13:48:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 280c8ece3a1089ad5fb4274053696364 SHA-1: 4595caed778b2b2ee24da77c684322d145279c2f SHA-256: 5b534a176df88faf5eca4895e397878352ddd67006c6c2451676533f72be3431
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://leonvi.ru/wix?keyword=street+fighter+2+apkpure PDF link annotation
    • https://cdn.sqhk.co/matijamaj/cjiv19X/granny_s_kitchen_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/sixojifez/mVih4v7/katove.pdfIn PDF document text
    • https://pomonomiwubexi.weebly.com/uploads/1/3/2/3/132302815/3171879.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuletixex/foHjerl/coupons_for_walmart_promo_codes_20_off_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/tijovomiv/0hcXIhj/family_fun_pack_ps4_game.pdfIn PDF document text
    • https://gajatizu.weebly.com/uploads/1/3/5/3/135315297/1454917.pdfIn PDF document text
    • https://cdn.sqhk.co/guvawatuzax/hahelja/pixel_gun_3d_world_4_bonus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484994/normal_5ffc7400b797b.pdfIn PDF document text
    • https://cdn.sqhk.co/wamefuvew/ovgd5jg/memufiponusawewedatuboru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494674/normal_5feeef1f49cd3.pdfIn PDF document text
    • http://dapumad.iblogger.org/60332044744.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457561/normal_5fdc64d13afb6.pdfIn PDF document text
    • https://cdn.sqhk.co/livatunozasu/d2ificE/old_pls_download_new_version.pdfIn PDF document text
    • https://cdn.sqhk.co/wesebewoweva/id2bigL/52991578179.pdfIn PDF document text
    • https://zoparidozuxeb.weebly.com/uploads/1/3/5/3/135390671/1340597.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370269/normal_5feb4baa90901.pdfIn PDF document text
    • https://cdn.sqhk.co/jesovolavig/gdajg7D/51411369484.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/EFjiiig/28140279221.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jasosuwer.epizy.com/folded_leaflet_template_sizes.pdfIn PDF document text
    • http://damatagowigiz.epizy.com/31792785369.pdfIn PDF document text
    • http://zopegekole.rf.gd/fenabetejutalubaxonadi.pdfIn PDF document text
    • http://kusegipe.epizy.com/artificial_intelligence_with_python_prateek_joshi.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_off0000c415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC415 5252 bytes
SHA-256: d3787cfec30e8d708c9a1050d0206b5bea858de7180a01bd53aff999b8f68c79
font_01_sfnt_off0000d5f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F0 9896 bytes
SHA-256: f86fb764262bccc8a0f642f60cb714a197ca29c948037c104bc6e64d6a429b79

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