Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3871146f75a5dc8…

MALICIOUS

PDF

65.6 KB Created: 2021-02-14 09:53:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0b1161b7be07780ee899fe2c8ad80341 SHA-1: 4f3c1805233b13eb8e0a9d84f88e28bafd216395 SHA-256: d3871146f75a5dc847eb79ba5bb64982ebecdcb77d4bf8d9412bc03b43319d23
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://seumenha.ru/wix?keyword=mary+ford+elementary+school+report+card PDF link annotation
    • https://cdn.sqhk.co/jukowejazus/jkxibig/36221798816.pdfIn PDF document text
    • http://probnik1313.tech/xetedosobefagurejobosbucj.pdfIn PDF document text
    • https://sadaxolofomet.weebly.com/uploads/1/3/1/4/131453623/pifofivuv.pdfIn PDF document text
    • http://sukuzarimeke.22web.org/nds_emulator_for_android_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kokademesuz/difhf2O/remove_screen_lock_apk.pdfIn PDF document text
    • https://detubutil.weebly.com/uploads/1/3/5/3/135348338/kajomuveket.pdfIn PDF document text
    • http://greatholl.com/free_download_geometry_dash_world_mod_apkk7861.pdfIn PDF document text
    • https://patoduwewoz.weebly.com/uploads/1/3/1/4/131483118/2425914.pdfIn PDF document text
    • http://repair-foto.ru/86373178064n7tz1.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/paropabaru/audio_mastering_software_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/dragon_ball_gba_games_free.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_off0000c2d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2D5 5500 bytes
SHA-256: db3c489078345dd065919346b9e78fe27a4552a64ddddce40c2614ac21639cce
font_01_sfnt_off0000d57b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD57B 10612 bytes
SHA-256: 058861c3b59178c8274f1740849e03ea5a213ec1b3bfec801c7b68de1811af62