Malicious PDF — malware analysis report

Static analysis result for SHA-256 9912b41381bb73bf…

MALICIOUS

PDF

79.5 KB Created: 2021-02-20 04:29:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 15b1fd9c51045939bdd3746d86cbeee7 SHA-1: da511451995dc035625a1b2328d5261f1e3631a8 SHA-256: 9912b41381bb73bf4eec91d5225c27be4a94e3fd56a27ded219fcfa48c473fb7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=walmart%20sun%20joe%20pressure%20washer%20black%20friday PDF link annotation
    • http://introdom.ru/differential_equations_worksheet_ap_calculusdubrh.pdfIn PDF document text
    • http://yyyyyyhhhhh.space/ligelufijj7uz.pdfIn PDF document text
    • http://design-kvartira.info/medical_abbreviations_freerf772.pdfIn PDF document text
    • https://cdn.sqhk.co/navififoro/gfX9ege/sniper_killer_assassin_shooter_pc_game_download.pdfIn PDF document text
    • http://e-devletturkiyeaidatsistemimgovtr.com/28493355181s7kfa.pdfIn PDF document text
    • https://kifirazet.weebly.com/uploads/1/3/4/7/134715796/178621.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421466/normal_5fc8876acf763.pdfIn PDF document text
    • http://ijmalan.xyz/tovinotuxurexu9yjhw.pdfIn PDF document text
    • https://mitebisaxu.weebly.com/uploads/1/3/5/3/135395238/86f863.pdfIn PDF document text
    • http://bcpzonasegurape2-viabcp.com/888706696669u7zq.pdfIn PDF document text
    • http://freedate18.xyz/923482293832onsz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457302/normal_5fe16206115fd.pdfIn PDF document text
    • http://policyhelpcenter.com/tukidijidusutusi213p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405413/normal_601725c79abfe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366047/normal_5ffb7e4768a69.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f71f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71F 5880 bytes
SHA-256: dac84a907f0f08b1ed5951fe78a4b2cd9c833ea2ad18fb57c544a821d9b7134c
font_01_sfnt_off00010b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B19 11356 bytes
SHA-256: 9c30aafd27ead5c86916cab5b731f87ea903ebd4075afaf37f48846e43fb94ed