Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad9c833a3a260878…

MALICIOUS

PDF

74.1 KB Created: 2021-01-31 14:50:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4dbca798c2ed66997a84552723ffa68c SHA-1: 4857f0d4a5da9d76b934a50df48623f46ce28eb9 SHA-256: ad9c833a3a260878d9f5498164b7e72b31b411e27882402799cdbfabdf763a09
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/aws?utm_term=cat+verbal+ability+questions+with+answers PDF link annotation
    • http://bestrongbyg.com/hollywood_action_actors_name6p378.pdfIn PDF document text
    • https://cdn.sqhk.co/sorubajuzoxe/jigji4q/likert_scale_template_smiley_faces.pdfIn PDF document text
    • https://cdn.sqhk.co/damukowabij/0KIbvUU/26461293165.pdfIn PDF document text
    • http://apparentlyopt.com/aceite_transmision_manual_jetta_a4k4s22.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/iahh3ih/nick_jonas_net_worth_in_crores.pdfIn PDF document text
    • https://cdn.sqhk.co/tevosenijosu/jcjdria/tuwewafolutuzikola.pdfIn PDF document text
    • http://kozlo.space/review_film_my_little_baby_jayan69ak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371246/normal_5ffcd2f0254db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529697/normal_600c84a660abf.pdfIn PDF document text
    • http://boldly-grow.com/one_click_unbrick_tool_xdaceiud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413838/normal_5ff379a267b24.pdfIn PDF document text
    • http://lozhobelir.space/duravopuzinarubegemikuzum1ag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452372/normal_5fc870944ed7f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vosimamasi.epizy.com/universal_audio_ox_manual.pdfIn PDF document text
    • http://guxozuzemonixe.epizy.com/59982807035.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_off0000e478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE478 5196 bytes
SHA-256: 3739180f8ea3ce01c96d98ede57e257017ab3dd440bad3471889a7369caf01d6
font_01_sfnt_off0000f636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF636 10916 bytes
SHA-256: aaf61bb263b06571ef38a3f8a168dc6b593011f4a884fda303bc7570192d94ba