Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c8abf5076cf089b…

MALICIOUS

PDF

69.5 KB Created: 2021-02-13 20:54:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e1f6300b4f5b67b134ccac9600423c15 SHA-1: 2f44673b6290bdd72a8a2d1ae5baf140cc74ed5f SHA-256: 4c8abf5076cf089bc9691aaa8d4e855b0f455ab823262faa257c8025f56dc5ca
134 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 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://leonvi.ru/wix?keyword=the+norton+sampler+8th+edition+pdf+free+download PDF link annotation
    • https://cdn.sqhk.co/wobuwozavenu/heiirhh/dragy_gps_performance_box_review.pdfIn PDF document text
    • https://cdn.sqhk.co/tapuvimixaxo/jiiaqib/87832094341.pdfIn PDF document text
    • http://helpcontactform.com/miwabulolejagetinenr2puo.pdfIn PDF document text
    • http://badge-verification-center.com/zuronuvgr7yz.pdfIn PDF document text
    • https://cdn.sqhk.co/vozogekom/h4IwBig/kidcity_wwe_2k17_halloween.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/hfogcqF/95847603892.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459645/normal_5ff94fe564cff.pdfIn PDF document text
    • http://microbladingeyebrowsdallastx.com/841393873075u70i.pdfIn PDF document text
    • http://noncomform.space/happy_hour_invitation_email_template1q76y.pdfIn PDF document text
    • http://triple-doska5.club/blender_python_tutorial_for_beginners79l5m.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422659/normal_6008994ce24ed.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/nodetuxapabara/internal_audit_report_marketing_department.pdfIn PDF document text
    • http://lefabafe.epizy.com/regopor.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/vuvuvupuligelutilu.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/yts_apk_for_windows.pdfIn PDF document text
    • http://zusufiwopimi.rf.gd/tecnologias_de_la_informacion.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_off0000d2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B1 5516 bytes
SHA-256: 67873be8e4784dad24d7b6d2090e18f36947e658b51bbc4ed6c88bafae1cc9c4
font_01_sfnt_off0000e551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE551 10296 bytes
SHA-256: 0c6e14c55a82afd1e5a55850bc98544bb966b342a07aafa45329eb5fbdb6e57f