Malicious PDF — malware analysis report

Static analysis result for SHA-256 36b67fc45f4fe34f…

MALICIOUS

PDF

82.0 KB Created: 2021-02-23 05:20:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 61d58deafbff253805c8e0f66f777eb2 SHA-1: 9fc719b9fb12a75c6ee6bea5ffd3699c9bd7220e SHA-256: 36b67fc45f4fe34feecd023921c21596cc847c9961181647b7442f7a33ece28e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://jacksth.ru/wb?keyword=planificaci%C3%B3n%20estrat%C3%A9gica%20educativa%20pdf PDF link annotation
    • http://astropsychology.website/crawfish_etouffee_nutrition_informationcbi0q.pdfIn PDF document text
    • http://servicesforsupport.com/protocolo_de_pollock_7_dobras5pw2z.pdfIn PDF document text
    • http://wonnaturila.space/zoom_h2_manual_deutschimhkq.pdfIn PDF document text
    • https://cdn.sqhk.co/degavorofala/VhaibZk/fateketowupifukalidok.pdfIn PDF document text
    • http://craftsmansmetics.com/nexerevomonobusurowifbwrmz.pdfIn PDF document text
    • https://rutebesutev.weebly.com/uploads/1/3/4/1/134131531/roxenot.pdfIn PDF document text
    • https://ninefajesazaga.weebly.com/uploads/1/3/5/3/135384029/kusadisiwaveror.pdfIn PDF document text
    • https://najusijas.weebly.com/uploads/1/3/5/4/135400897/94fa063a7d.pdfIn PDF document text
    • http://naxiramomamaz.66ghz.com/descargar_mapa_bilbao.pdfIn PDF document text
    • http://robinmani.site/safejubovipegitiwove67bcj.pdfIn PDF document text
    • https://cdn.sqhk.co/piredonina/dHdLgia/tactics_and_srpg_apk.pdfIn PDF document text
    • https://werudugin.weebly.com/uploads/1/3/0/8/130873895/kiripejapiluxe-vobena-busuredufubawoj-lofizu.pdfIn PDF document text
    • https://cdn.sqhk.co/mifopanikil/c4zHhXz/kaligupuzogox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pijewonizitubi.epizy.com/46410301497.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/pagobulozodufasegawi.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_off0000ff9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9E 5664 bytes
SHA-256: 1ad8e289d1a0b4e6d9ac9a3f3974385aa19d779fb86e09d5e097bb894d33f6de
font_01_sfnt_off00011270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11270 12084 bytes
SHA-256: b1fd0e99f7cc78f10b4939cfc8334e3643f26a8ffc4cab3914a4551894fa8b69