Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b412aada064fe1a…

MALICIOUS

PDF

73.4 KB Created: 2021-01-30 20:45:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 11cba2f1d686d13998fbb8b3f95791e0 SHA-1: 98f51b1cdaaff5b7b0b8632f599ac513f068b550 SHA-256: 6b412aada064fe1a05f010856320f929b5c0dcdbe573d7f5011c7c0ae8874f01
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=west+african+names+girl PDF link annotation
    • https://cdn.sqhk.co/zosiwutu/hdhdmag/underhanded_meaning_in_urdu.pdfIn PDF document text
    • http://igcopyrightverify.com/53880040302jb22e.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvinudubuno/rgepheZ/56013616242.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408346/normal_5fcc1e74152ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376611/normal_600b10d552c30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408599/normal_5fe312faa7d21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451755/normal_5fe75073905e7.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/rghUPof/70155943445.pdfIn PDF document text
    • https://cdn.sqhk.co/zumiredosuwi/fhidhhL/infection_control_certification_requirements.pdfIn PDF document text
    • http://wimazosuwoxugij.66ghz.com/prepaid_card_connect_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462678/normal_5fe04e54497da.pdfIn PDF document text
    • http://nemekarasika.iblogger.org/sutilolaxafo.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/ghGjahv/facebook_mobile_dark_mode_android.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fudixuxutinizow.rf.gd/yowhatsapp_apk_7._99.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/jawewuriwilep.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_off0000e1eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1EB 5216 bytes
SHA-256: c6f2ea70f601bab4272c45f20c8f8e8dd59cd4b339b01ab5861c2e8a01c25577
font_01_sfnt_off0000f3a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A2 11160 bytes
SHA-256: 74f4ae69aa220c2af33abd47804293c7bb00d11c82b4b5d065fdc558d1dc0f7c