Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c8c6f9bf6cb337b…

MALICIOUS

PDF

74.0 KB Created: 2021-02-14 12:04:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5f5dd183628e6830b8d692b11d1c3d6f SHA-1: 4a5a6dafbedf35f6af9b5f8cdc3853998f7c182c SHA-256: 1c8c6f9bf6cb337b0236661ab54d008ab1d2381f307264d0f88d0490f1c82de1
126 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
  • 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://druttle.ru/wix?keyword=horizon+zero+dawn+skill+tree+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393180/normal_5fc6b34a9189a.pdfIn PDF document text
    • http://quickpapp.online/ineffective_airway_clearance_pneumoniauy8g1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464735/normal_600d458b4e729.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413465/normal_602824c9d9bb7.pdfIn PDF document text
    • http://citimart.online/ipcc_auditing_standards_notesaa0w7.pdfIn PDF document text
    • http://vorecan.fun/survey_organic_cosmeticsi4k5m.pdfIn PDF document text
    • http://vezapom.iblogger.org/age_of_wonders_3_guide_steam.pdfIn PDF document text
    • http://balifruit.com/94843498822ujnv3.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/selivuvumepaveb/minof.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/beretta_px4_storm_9mm_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/dulanitonuliradeborirowi.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/32004881400.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/50291687878.pdfIn PDF document text
    • http://sigukig.rf.gd/font_brush_script_mt.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/azure_blob_storage_tostreamasync_example.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_off0000e669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE669 5160 bytes
SHA-256: 2608a132245f526cc461c7842225176b5e10f2f689a1c8a220a2bd890a887369
font_01_sfnt_off0000f821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF821 10308 bytes
SHA-256: 3c62d31b928dc066ee2f21ef86be54b9cad953725e6d0669c4554106666cce8c