Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a4ad908daf2f9df…

MALICIOUS

PDF

72.5 KB Created: 2021-02-16 09:02:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e93b6f94b5df065fd6a364f83e77ced5 SHA-1: 56f0aa952a3d53c7c74fd867850c43aa21eac473 SHA-256: 6a4ad908daf2f9df55744ce129b82bda598d022f3ebe643bc4766031a8143d62
246 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://tatedugede.weebly.com/uploads/1/3/4/3/134311852/985519f73cc4ee.pdf.
  • 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=life+of+pi+floating+island PDF link annotation
    • http://e-devletturkiyeaidatsistemimgovtr.com/sudepitolavadex26ypu.pdfIn PDF document text
    • http://hr-insider.com/flores_hechas_con_botellas_de_plastico_manualidadesk6v98.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/jjhg2pd/noxufuporuwexu.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/chi1bBt/fighting_tiger_liberal_mod_apk_2._7._1.pdfIn PDF document text
    • http://moresukko.ru/narokijaruxozavqnvb.pdfIn PDF document text
    • http://nominasacra.ru/pocket_warrior_modp3ux0.pdfIn PDF document text
    • http://stassikorskyi.com/catanzaro_informa_acqua_oggi0pqv8.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebililofo/XnGlie6/cat_sound_message_tone_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/rabovafom/vjeAjeU/home_based_assembly_jobs_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/wYji2kH/broken_dawn_2_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/NicB0ij/cheat_city_racing_3d_mod_apk_old_version.pdfIn PDF document text
    • https://tatedugede.weebly.com/uploads/1/3/4/3/134311852/985519f73cc4ee.pdfIn PDF document text
    • https://cdn.sqhk.co/febenapox/ghgf1jb/76980478578.pdfIn PDF document text
    • http://shmelev.pro/xabofopijivenirarefobosa0c1u.pdfIn PDF document text
    • http://makedctl.site/swot_analysis_template_powerpoint8gwid.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/gedesisumi/49731314914.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/libros_de_anselm_grun_gratis.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_off0000de69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE69 5052 bytes
SHA-256: e4b902ea4ac8836b3aeb590fbe24162f7fdce398e51d0026587a4e0bf59f54fe
font_01_sfnt_off0000efba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBA 10804 bytes
SHA-256: aeb28ee84761d0c67f9860dc11b7920dcbabef473d1ee2b7333019886539851d