Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d81c5c773d48d39…

MALICIOUS

PDF

78.2 KB Created: 2021-02-19 08:36:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2cf1bf0c3f29e34cf4d4255eb3f6d1cb SHA-1: 5a1ce79b5618dc614c2a79797c9b222fb3a4d104 SHA-256: 9d81c5c773d48d39397df856295bf0f4ce18811d6df5245305ae299de05a20ed
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://bologen.ru/wix?keyword=whirlpool+dishwasher+quiet+partner+2+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490725/normal_601c8fc469f62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379234/normal_5fd86962913e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454426/normal_5ff0159fd8eea.pdfIn PDF document text
    • https://nitaluba.weebly.com/uploads/1/3/4/3/134348735/xunonuko.pdfIn PDF document text
    • https://cdn.sqhk.co/molipigi/b4ihZzd/offroad_jeep_driving_and_parking_mod_apk.pdfIn PDF document text
    • http://kafalogu.22web.org/best_heated_mattress_pad_queen_dual_control.pdfIn PDF document text
    • https://xodimazu.weebly.com/uploads/1/3/1/4/131408168/3014763.pdfIn PDF document text
    • https://cdn.sqhk.co/fedugaxoloz/ggLvhjw/sandwich_shops_in_uptown_dallas.pdfIn PDF document text
    • http://pufegusikozig.22web.org/english_grammar_check_app_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/jexerigix/ghqjhGb/toralovadovisinetodu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jevopuvejamiv.epizy.com/xawebojapuvelojej.pdfIn PDF document text
    • http://fomobiwudaz.rf.gd/access_control_policy.pdfIn PDF document text
    • http://mawekipabotore.epizy.com/company_branding_proposal.pdfIn PDF document text
    • http://lorazak.epizy.com/firex_120-538b_wiring.pdfIn PDF document text
    • http://supabije.rf.gd/vawinon.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_off0000f325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF325 5560 bytes
SHA-256: 51e86dc4223de354988d1642560d8efc501fdbd8a2cc2420aad9f8f2d7bca7b2
font_01_sfnt_off000105f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F5 11216 bytes
SHA-256: 5a88aeff8120bbcc5dcbc096eacb2b57df2ffe927e27301f816b05529d2aec6d