Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bf254bcc7a9695c…

MALICIOUS

PDF

77.9 KB Created: 2021-02-20 08:10:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3b71c83e3bd74b15808c903762e15a62 SHA-1: ed491dc5e32fe6bfe327ade5a009ec4764da321d SHA-256: 2bf254bcc7a9695cbfe932379c0ef4e35b4d4f0e6642dff29d398e67e8c59a49
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jottigo.ru/wix?keyword=btd+5+hacked+unblocked PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421630/normal_5ff46c79aca5c.pdfIn PDF document text
    • https://jowidirususonin.weebly.com/uploads/1/3/0/7/130775515/vozozukeru_xesozisikuli_mupogebufit.pdfIn PDF document text
    • https://medotufise.weebly.com/uploads/1/3/4/5/134512565/7be1d2ba8daab20.pdfIn PDF document text
    • https://cdn.sqhk.co/kawinojos/hibhjNq/overdrive_premium_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373508/normal_5fe75e3b63487.pdfIn PDF document text
    • https://wiwanozamo.weebly.com/uploads/1/3/4/3/134306351/segavatuzesaguvorobi.pdfIn PDF document text
    • https://voxudipuxun.weebly.com/uploads/1/3/5/3/135319737/letunuloper.pdfIn PDF document text
    • https://cdn.sqhk.co/zubixola/hTbTijx/copper_scrap_price_per_kg_in_coimbatore.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424009/normal_60020118f1a6e.pdfIn PDF document text
    • https://cdn.sqhk.co/lorotukogof/hjgfiar/capsicum_frutescens_seeds.pdfIn PDF document text
    • https://gipoxafevipetim.weebly.com/uploads/1/3/1/3/131398102/kazulu-xogobatide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464852/normal_5ffac3af9703b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zedebepibepus.rf.gd/free_avg_antivirus_for_pc.pdfIn PDF document text
    • http://zewuref.rf.gd/karadenaxafinek.pdfIn PDF document text
    • http://gevuwomomot.epizy.com/orlando_virginia_woolf_espaol.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_off0000f602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF602 5132 bytes
SHA-256: 0f312096b95d92b4aba9fc363f842c587ed1e31513f7ad8f5be4b76496ec7182
font_01_sfnt_off0001077e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077E 10496 bytes
SHA-256: 94353c33986eaf69f8c69df67f867e4eae639f1b7302ae57d3d36fbdf6ed8ffd

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