Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bce9ccd01c895f1…

MALICIOUS

PDF

65.5 KB Created: 2021-02-20 15:39:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fd9f123980b60ba89c32d5e2f08f22ac SHA-1: 627fcf623d0b2e66d0e5805ed4337b6721e269d7 SHA-256: 6bce9ccd01c895f106513683826d38f09eb8e206a8d7810cd53ce41eb724b061
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=madden+mobile+master+series+schedule In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408009/normal_601acd50b3b4b.pdfIn PDF document text
    • http://rewita.fun/baby_carriage_3d_model_freedu3ao.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453342/normal_6030648214e06.pdfIn PDF document text
    • http://fitokaps.xyz/pakavotejopolonubijaoruo.pdfIn PDF document text
    • http://f13x.xyz/musarogululidopeudneq.pdfIn PDF document text
    • https://cdn.sqhk.co/zuronenom/kdrjaj3/43071333410.pdfIn PDF document text
    • http://batmbatm.ru/povokosunafumuw66p1h.pdfIn PDF document text
    • http://stopro.store/16457463453t4av.pdfIn PDF document text
    • http://nout-sale.site/tamazisaparadarete2u5h5.pdfIn PDF document text
    • https://cdn.sqhk.co/wosipuvetot/a7WE5hd/cracker_barrel_menu_desserts.pdfIn PDF document text
    • https://cdn.sqhk.co/jadepibake/4djdjgO/knives_out-_no_rules_just_fight_mod_apk.pdfIn PDF document text
    • http://shtampshop.ru/difference_between_denotative_and_connotative_meaning84bkk.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/cxcuMgi/getajevibilafowimibokuw.pdfIn PDF document text
    • http://sweetmeet.online/xajusixofujikelaveeh54b.pdfIn PDF document text
    • https://cdn.sqhk.co/mopomotop/ghhcgey/99341041017.pdfIn PDF document text
    • https://cdn.sqhk.co/muvotugi/h7KigwD/91863434864.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://misibinebob.epizy.com/piwapanovoxibivebuterimo.pdfIn PDF document text
    • http://lofoxos.epizy.com/auditorium_plan.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_off0000c725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC725 5324 bytes
SHA-256: 53c825f4569c087aea0cd8dc6f0b5260a028cfa56e0cd4aa87fa18724f109381
font_01_sfnt_off0000d914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD914 9304 bytes
SHA-256: 73d5493f8f1705241ce308bfb12e6752510df0d875ac540038dfd94382b196cd