Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed39580b705b6601…

MALICIOUS

PDF

80.3 KB Created: 2021-03-16 19:21:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c66d22c17a860488fcd15f261fb551af SHA-1: 68a7a9aebbeb1d4b81ab0df964564906fd5f7eeb SHA-256: ed39580b705b660169b386626d88e724a4211aa43688638cae277c7f054cbeb7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/strik?utm_term=descriptive+writing+examples+for+grade+7 PDF link annotation
    • https://cdn.sqhk.co/bujasugawo/2ii8yxY/gestion_de_conflit_dans_une_equipe.pdfIn PDF document text
    • https://cdn.sqhk.co/rekewuneboxu/zqjcGOV/mopavofutuxike.pdfIn PDF document text
    • http://jofipifemu.medianewsonline.com/37082574319.pdfIn PDF document text
    • https://cdn.sqhk.co/jutigurotow/27S7ggn/31120866268.pdfIn PDF document text
    • http://mivetys.xyz/spectacular_2009_movies08c4.pdfIn PDF document text
    • https://cdn.sqhk.co/zatufora/Ociisjb/good_slice_game_peach_level.pdfIn PDF document text
    • http://hangzhoumetal.ru/gajotuzofeviwisawamenuled5rrr2.pdfIn PDF document text
    • https://cdn.sqhk.co/baresupujar/haifmdx/neighborhood_credit_union_mesquite.pdfIn PDF document text
    • http://woodbonus.net/kulekopabusedovimakewucngv.pdfIn PDF document text
    • https://cdn.sqhk.co/jivobukafon/TqOhbjg/bedepevepebujazuk.pdfIn PDF document text
    • http://lavkavkusa.store/dubai_drift_2_mod_apk_rexdl2iba8.pdfIn PDF document text
    • https://cdn.sqhk.co/kapopajij/iiibjXv/groove_coaster_2_download_pc.pdfIn PDF document text
    • http://rupaduwovuw.getenjoyment.net/18284672246.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/94fd3edc-acf9-47a6-a240-b009eeb80836/guzefutewikud.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/bangalore_days_movie_songs_masstamilan.pdfIn PDF document text
    • http://zodiripek.myartsonline.com/descargar_diccionario_espaol_portugues_brasil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0aa8d9f-d8cf-4ce7-b5b4-05ab3ca28ca2/how_to_turn_on_bluetooth_hp_probook_4530s.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24f78094-1ce3-472e-8021-b1cdcf355a84/how_do_you_move_tables_in_google_docs.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/zolenetid.pdfIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/i_am_thankful_for_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/bairaag_movie_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/63299933939.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F7 5776 bytes
SHA-256: 8d10be564b1385d456fd922bec20c780f258d1280dfbf04e40bc0af1f6cce808
font_01_sfnt_off00010cb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB4 11616 bytes
SHA-256: 3a7b8c8230ad6da5261f2d4d41bac6f6f29d254a122967254bb1923e079777c6

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