Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ca985eb6633c4d…

MALICIOUS

PDF

71.9 KB Created: 2021-01-29 06:31:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 56d49c644e68337d19d1d4946de4a84f SHA-1: 6ba8da682054dc3d7433070255f775392ac956ff SHA-256: 84ca985eb6633c4dba8fe26a9851245145fe15847c7ad45f727cab9903828fca
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://gettraff.ru/wb?keyword=ghostface%20killah%20winter%20warz%20instrumental In PDF document text
    • http://virona.org/73375100529yjyvv.pdfIn PDF document text
    • http://busivel.xyz/87481353769lvj5n.pdfIn PDF document text
    • https://cdn.sqhk.co/sesexibanobu/d9H0K4Y/70882750520.pdfIn PDF document text
    • https://cdn.sqhk.co/bibolaned/IQ19hbo/dog_parkour_training_near_me.pdfIn PDF document text
    • http://pubggaming.online/historia_del_derecho_mexicano_de_guillermo_floris_margadanttvskq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491670/normal_600f76edd2b35.pdfIn PDF document text
    • http://freedate18.xyz/trend_following_strategieszlapq.pdfIn PDF document text
    • http://leopards.space/zowusikrqn6.pdfIn PDF document text
    • https://cdn.sqhk.co/buruvalufe/BigRQia/funny_punjabi_videos_for_whatsapp_status_download.pdfIn PDF document text
    • http://takefeduw.iblogger.org/kunogotun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://munoxefarofow.rf.gd/tivalevodafux.pdfIn PDF document text
    • http://xokutamewa.rf.gd/whatsapp_app_for_android_tv.pdfIn PDF document text
    • http://wojobawezelo.rf.gd/biruveram.pdfIn PDF document text
    • http://gavojomizam.epizy.com/metunowabebije.pdfIn PDF document text
    • http://widafasamuj.epizy.com/koxowebitapukikozepopis.pdfIn PDF document text
    • http://wojixefem.epizy.com/miwepun.pdfIn PDF document text
    • http://moniladipawi.epizy.com/the_electoral_process_review_worksheet.pdfIn PDF document text
    • http://ratotepuno.rf.gd/bticino_intercom.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_off0000db32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB32 5356 bytes
SHA-256: e096314eebcaf8fb014979115da16141446377489384379f7785886b7880a441
font_01_sfnt_off0000ed5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED5F 10812 bytes
SHA-256: 6bbfcc428df0c0563a9358feb2be120c17f75f0887fcc2f41268ac3322d9a8a6