Malicious PDF — malware analysis report

Static analysis result for SHA-256 9124dc50b1c2cbce…

MALICIOUS

PDF

72.3 KB Created: 2021-02-28 01:56:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 97d054c6816fd989a5c4b160084b53a7 SHA-1: f2c0f406619c2d420064d5ce482ccd2511204783 SHA-256: 9124dc50b1c2cbce06adab674a0587fb6dd701dcacc75ff1d90f3153b90acce2
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://crophysi.ru/award?keyword=how+to+deal+with+adhd+behavior+problems In PDF document text
    • https://cdn.sqhk.co/pabefidinaz/sHIoEje/prison_break_season_6_download_videos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448735/normal_60141f6304ae8.pdfIn PDF document text
    • http://blubadgehelp.net/10647849286ar7qo.pdfIn PDF document text
    • https://cdn.sqhk.co/kujexelorite/Ljahfif/rush_hitam_atau_putih.pdfIn PDF document text
    • https://cdn.sqhk.co/mafowixodi/Rhjgfjh/71831645882.pdfIn PDF document text
    • https://cdn.sqhk.co/jarogofef/aUygjgj/sulexasevasukekiwibunoz.pdfIn PDF document text
    • https://cdn.sqhk.co/mudebijutene/uQgf6id/advance_auto_parts_jacksonville.pdfIn PDF document text
    • http://womarerawona.iblogger.org/bike_jump_java_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498882/normal_5fc581cc8e3d6.pdfIn PDF document text
    • http://buyervannakupitvsem.xyz/66106016528ng3bp.pdfIn PDF document text
    • http://kivanonox.iblogger.org/everything_explained_for_the_professional_pilot_13th_edition.pdfIn PDF document text
    • http://xteenware.online/how_do_i_do_a_powerpoint_presentation_for_an_interviewvfaur.pdfIn PDF document text
    • http://mivejuvididu.66ghz.com/duderigagi.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/fezenur/inherently_instinctively_crossword_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/tyrwhitt_shirt_size_guide.pdfIn PDF document text
    • http://koratiluvukeji.epizy.com/voltage_stabilizer_troubleshooting.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/aspergillosis_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/9965339539.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_off0000df53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF53 5452 bytes
SHA-256: 7cbd31559787cd604370f0772aa36e831fdef62641f67686e8ea524a8f0c56df
font_01_sfnt_off0000f1b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B4 9988 bytes
SHA-256: 8dc00804f7961e01e5293e0d92e92cce0d816e5f2cdfecd8604f91b2dab50461

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