Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b6da96e4abdb9b0…

MALICIOUS

PDF

79.3 KB Created: 2021-03-17 02:52:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 10c6a4f8a929f1af041805658369af2e SHA-1: 3cf46da26cd0a13f55dc258915c13d6303224a44 SHA-256: 7b6da96e4abdb9b03876f1b02fb1f8da77cb097ca174a5f7ac8195a84c8f5dde
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/wix?keyword=examples+of+clinical+pathways+in+nursing PDF link annotation
    • http://iblack.space/case_files_emergency_medicine_fourth_editionidlux.pdfIn PDF document text
    • https://cdn.sqhk.co/jebavimot/bhbid63/fruit_clinic_unblocked.pdfIn PDF document text
    • http://wuxifev.iblogger.org/what_is_intelligent_design_creationism.pdfIn PDF document text
    • http://reduslim-sitoufficiale.site/povukurisasusaydgq.pdfIn PDF document text
    • http://autobaff.xyz/how_to_help_with_reading_fluencysm0sc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367646/normal_6025ceda0ff3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424349/normal_5fcc61e026159.pdfIn PDF document text
    • https://cdn.sqhk.co/rivotoxupow/Y8s7Ahh/7984212531.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/eheijih/slots_games_download_pc.pdfIn PDF document text
    • http://kudukudimox.sportsontheweb.net/disneyland_paris_resort_map.pdfIn PDF document text
    • http://mgacessoria.online/tawisuvazomoginofito2pr5l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379380/normal_5fdc6bd7651a2.pdfIn PDF document text
    • http://weinmvc.net/fishing_line_setup_for_striped_bassmg6kk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485926/normal_5fe151192deb7.pdfIn PDF document text
    • http://tajuliwelofiti.medianewsonline.com/60634921709.pdfIn PDF document text
    • http://lomigakorak.getenjoyment.net/powermatic_2_electric_cigarette_injector_machine_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/wofunukasu/bhayhdP/crime_city_real_police_driver.pdfIn PDF document text
    • http://lifeeuro.info/how_to_remove_a_salt_chlorinator_cellclj2r.pdfIn PDF document text
    • http://acupofjacob.com/intel_4_series_express_chipset_driver_windows_10w7r0b.pdfIn PDF document text
    • http://minesaxofunawi.getenjoyment.net/cyberpunk_2077_ps4_controller_issues.pdfIn PDF document text
    • http://profapp.pro/805584768595tjus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://xalenefinuj.rf.gd/g_d_constable_full_form.pdfIn PDF document text
    • http://nujugeteteda.myartsonline.com/raxulet.pdfIn PDF document text
    • http://xaxuvep.epizy.com/21395164508.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1C 5532 bytes
SHA-256: 56bcea3744dfc17140c4308df1b5f2db6b80eb25b338798276455131223a3db3
font_01_sfnt_off0000fde1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE1 10480 bytes
SHA-256: 62b529bb9f6f81d1dd479f37f7b93f0679c7b3d0ac6bbe7a420284a300a231a3
font_02_sfnt_off0001217d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1217D 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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