Malicious PDF — malware analysis report

Static analysis result for SHA-256 6425da9c479bfdaa…

MALICIOUS

PDF

67.3 KB Created: 2021-02-23 08:47:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3499d236f89f0ba73aa0352d07165afe SHA-1: c20fad0a6d811f79d4acdfa3ce7651ca5f0a3ae6 SHA-256: 6425da9c479bfdaa7fab6f794ba64fc9e61bfb4e0e4864cb0861fd63124b8370
134 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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://bologen.ru/aws?utm_term=ipod+touch+4th+generation+screen+repair+price PDF link annotation
    • http://rmk4sale.xyz/516923769vowwh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394077/normal_60240c733e689.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466673/normal_5fda646285400.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420599/normal_602872ef7728d.pdfIn PDF document text
    • http://slamelina.website/premier_league_official_app_mod_apkorf49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465264/normal_601871daa70b0.pdfIn PDF document text
    • http://accueilcmb.com/plantronics_backbeat_go_810_wireless_noise_canceling_headphones_reviewi0fnm.pdfIn PDF document text
    • http://tranquils.space/kenmore_dishwasher_ultra_wash_quiet_guard_4_resetewmkq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470975/normal_5fecd2dfe71e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385647/normal_60126a2d31e8f.pdfIn PDF document text
    • http://store50off.info/dividing_amounts_into_ratios_worksheetpmz9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485821/normal_5ff5390b8c5eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453336/normal_60170f1de1185.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486742/normal_5fc9e8056a568.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kepinud.rf.gd/nebawupeja.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_off0000c878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC878 5328 bytes
SHA-256: e504c83a015ad0a4b07d5bb28a3d5e5b368812b4e889e7da377e478a61e31df6
font_01_sfnt_off0000da9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9B 11064 bytes
SHA-256: 2ae10e99623439a5be947b04dbd2159cb87fe04a76103e3829c8e78a26ad92a7