Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8f387e2848ab0af…

MALICIOUS

PDF

71.7 KB Created: 2021-02-26 15:39:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 50cfb4d6d49bfdff88b907278e924978 SHA-1: 07a74528ae89b46776e2596411e9483258bc695e SHA-256: c8f387e2848ab0aff5e8ac4f84579a7151a308964b129a728ce14aaf47ac6eff
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://bologen.ru/award?keyword=beats+solo+2+wireless+replacement+parts PDF link annotation
    • http://cmbespaceclient.xyz/miwonemelenawozijasupibapb7if5.pdfIn PDF document text
    • http://nebofimanigi.sportsontheweb.net/garmin_nuvi_3597_price.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408348/normal_602142c9963c5.pdfIn PDF document text
    • http://pimifawimonidij.mywebcommunity.org/how_spell_slots_work_5e.pdfIn PDF document text
    • http://esmoney.site/figure_drawing_classes_near_mer8ky8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411922/normal_60388fdf67a8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480732/normal_60265e5e9dd70.pdfIn PDF document text
    • http://rijewomel.scienceontheweb.net/6112980726.pdfIn PDF document text
    • http://giveaway2020.info/kuluzig69z56.pdfIn PDF document text
    • http://ipatovaalena.ru/kinetico_kube_1_water_softener_installation_manual5uw05.pdfIn PDF document text
    • http://sixesijilolun.mywebcommunity.org/what_are_the_5_forms_of_prayer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459182/normal_5fdfeece49592.pdfIn PDF document text
    • http://virona.org/amazon_knife_block_with_sharpenervby1a.pdfIn PDF document text
    • http://temppicture.xyz/77898128185ox4fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gumomexad.onlinewebshop.net/voronas.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/93394470625.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/dumasetujejo.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/network_security_specialist_salary_canada.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_off0000db9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9A 5352 bytes
SHA-256: b6eae2359d64bd8e2e0c1428854c380a80291f26c72af13c824afad1b96677b6
font_01_sfnt_off0000edcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCD 10560 bytes
SHA-256: 37137df9848a4616fe58f26f963a2774c8e570a536fe8f9f76961baa76f3888e