Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1d34d94a06ad496…

MALICIOUS

PDF

72.0 KB Created: 2021-02-03 02:57:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: bbf0f6ec1bac1fb81f0e086085ac3f97 SHA-1: 298f8a05c49f34cdbbadb102b750b8be6d93a2ac SHA-256: a1d34d94a06ad496992f73f98738ea007cb4404dbc49f9c7296c49c240ae71ef
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/123?utm_term=doral+building+department+directory PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384639/normal_5fd25fb1556d4.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/las_venas_abiertas_de_america_latinafayvm.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/T11hihe/rexajirunizerewiruw.pdfIn PDF document text
    • http://wersita.fun/62897910390bjhr2.pdfIn PDF document text
    • https://cdn.sqhk.co/dujepiwewi/ed2LNig/71886809002.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495691/normal_5fe6c4e05dd62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407085/normal_6013190916582.pdfIn PDF document text
    • http://juvozukatug.66ghz.com/54141710766.pdfIn PDF document text
    • http://erogan-encolumbia.site/diseo_de_pavimento_rigido_metodo_aashto_ejemplonhoa0.pdfIn PDF document text
    • https://cdn.sqhk.co/zovitamojim/vIhggBV/arkadelphia_walmart_bakery.pdfIn PDF document text
    • https://cdn.sqhk.co/milatepoz/ZGizeNZ/photo_effects_pro_download.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/punurum/rpg_character_sheet_designer.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/2523087011.pdfIn PDF document text
    • http://kedogevakubonog.epizy.com/free_listening_comprehension_worksheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/capital_inicial_acustico_mtv_completo.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_off0000daf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF3 5456 bytes
SHA-256: bfbbcb236c7d7c9af56b33ebbcdb34e50862c6571423d13691c3e694932c68bf
font_01_sfnt_off0000ed75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED75 11100 bytes
SHA-256: 16d8ab8226413647de408b19e3c6b14a7df9d2c45d6011f8b756d1408f0ed442