Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9950f5f8a2229eb…

MALICIOUS

PDF

70.7 KB Created: 2021-03-03 01:53:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 73ee25372f2b6a89bc07c6476bdd358b SHA-1: 27746af19dc26ee399fbe274f40bab61db684edd SHA-256: e9950f5f8a2229ebfba7695af5412f8305ac5ca77cb251ce221a3515e34dafbb
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/award?keyword=what+are+the+four+basic+elements In PDF document text
    • https://lipuguxe.weebly.com/uploads/1/3/0/7/130738524/xovuxoku_fojoxuverad_rivopo.pdfIn PDF document text
    • https://cdn.sqhk.co/kosojilufut/gizZKgi/nudojeronijizokil.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/hcljcgd/rs1_diy_sim-_racing_cockpit_plans.pdfIn PDF document text
    • http://legionmone.xyz/college_algebra_essentialsjjke9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412775/normal_6031e868a3fe7.pdfIn PDF document text
    • https://boretenewur.weebly.com/uploads/1/3/1/4/131453221/sagaz.pdfIn PDF document text
    • http://medtechnika1.ru/ruwubegevuvouibx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462732/normal_5fe7a973ead4a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474739/normal_60094c4e84fc1.pdfIn PDF document text
    • http://asta-stroy.ru/what_does_humanae_vitae_say_about_contraceptionzjfnv.pdfIn PDF document text
    • http://reawont.online/kuwewuzobotakuk475v.pdfIn PDF document text
    • https://cdn.sqhk.co/linotepibubi/e8S3NR8/best_tour_guide_for_switzerland.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/jijdu1n/2746410354.pdfIn PDF document text
    • http://trokot-online.xyz/json_scripting_languagexrfsv.pdfIn PDF document text
    • https://zulijijala.weebly.com/uploads/1/3/0/7/130740393/502160.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406787/normal_6025ab4c76127.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/bluestacks_android_emulator_review.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/niv_study_bible_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/91814239211.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/jerovuzunafuto.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_off0000d8ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AE 5272 bytes
SHA-256: 0b80633d2396f2e76a0c12c54effce911ae5877050d608d709a7802ee03b56e4
font_01_sfnt_off0000ea84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA84 10272 bytes
SHA-256: 643639855a789cc7453c2e256c1073ce1ee972058192e16f3bfa361a95be0590

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