Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9bcacd6bad0deda…

MALICIOUS

PDF

72.8 KB Created: 2021-03-03 15:31:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 174d47940890c6ee1a2d1b3585531f2d SHA-1: e7ad173a1d9f10cc9bbb086cce4aa4d668c3f43e SHA-256: c9bcacd6bad0deda1ee3397fa331992b790559e3bfaa3ee48bed93207eb9d50e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/wix?keyword=maytag+3000+series+dryer+owners+manual PDF link annotation
    • https://nunipotewisi.weebly.com/uploads/1/3/4/8/134892443/40adc2cc37.pdfIn PDF document text
    • http://new-leggins.site/blood_and_fire_art_showc9ixi.pdfIn PDF document text
    • https://cdn.sqhk.co/nakotuba/igjghd2/lethal_weapon_5.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/df1ozje/joroluxarokijoxiwilu.pdfIn PDF document text
    • https://cdn.sqhk.co/kixikeli/zRgfIjE/90768983088.pdfIn PDF document text
    • http://techanomic.com/zutilekubuxuvedofegutxej6g.pdfIn PDF document text
    • https://zuwuroxiver.weebly.com/uploads/1/3/1/0/131070979/5007162.pdfIn PDF document text
    • https://cdn.sqhk.co/gizukakom/ZMghgdF/21636476288.pdfIn PDF document text
    • https://tukumexof.weebly.com/uploads/1/3/4/7/134721389/1682167.pdfIn PDF document text
    • https://foduzivanikatik.weebly.com/uploads/1/3/4/4/134492938/5198017.pdfIn PDF document text
    • https://fagozozefixus.weebly.com/uploads/1/3/4/8/134846406/gewuledotaziw.pdfIn PDF document text
    • http://kind-insta.site/queen_fitted_sheets_with_deep_pockets9hq8z.pdfIn PDF document text
    • https://vaxokivov.weebly.com/uploads/1/3/1/4/131453734/1c3fb1.pdfIn PDF document text
    • https://zosafetudosejo.weebly.com/uploads/1/3/4/6/134670517/e33c8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dujabonesisu.rf.gd/employment_exchange_registration_form.pdfIn PDF document text
    • http://maludoxowo.rf.gd/pentair_superflo_pump_leaking.pdfIn PDF document text
    • http://famefikapipu.epizy.com/blender_game_engine_android_export.pdfIn PDF document text
    • http://nepupiborama.rf.gd/72322929877.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_off0000dece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECE 5648 bytes
SHA-256: d22ebd2727d076ecae7b9ea795bd922c157efd0d3458fdbf98d20d2f2f83231e
font_01_sfnt_off0000f21c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF21C 10512 bytes
SHA-256: 781decb15ebc252c777a68f6f4c55d03563a4311703af8c5d17236cb310fa91e

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