Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8aeec8c54bd6df8…

MALICIOUS

PDF

72.6 KB Created: 2021-02-27 21:24:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b63fa140e1bd7789587e2f236de4caf7 SHA-1: 14cd6dbc4d8d6e7600fd9e0655d29f36afbbe4cd SHA-256: b8aeec8c54bd6df878c3a04834aa72f14bfd99988ed70773c8dfd539e9e64912
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/award?keyword=oster+convection+toaster+oven+walmart PDF link annotation
    • https://cdn.sqhk.co/xemugugafot/giNkgeE/juzup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420766/normal_6031068965dd6.pdfIn PDF document text
    • http://xijilufaligamox.22web.org/cupboard_shelves_sheets.pdfIn PDF document text
    • https://cdn.sqhk.co/demawanetufi/dhjRLhj/guidesman_flashlight_menards.pdfIn PDF document text
    • https://cdn.sqhk.co/pubabolab/gijfYMC/buttercream_cake_ideas.pdfIn PDF document text
    • https://cdn.sqhk.co/tipadasa/cgeiggj/95720858159.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491687/normal_5fcf698d858d2.pdfIn PDF document text
    • https://cdn.sqhk.co/sopiloroda/aijiehi/60556008162.pdfIn PDF document text
    • https://cdn.sqhk.co/volakase/ge1jjzg/major_mayhem_2_hack_apk_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/dasisogi/FXUOFgj/moksha_bybee_utah.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423145/normal_5fdb90311f63e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pawubiba.epizy.com/77152018900.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/template_for_music_video_script.pdfIn PDF document text
    • http://marivugedada.epizy.com/fatokifuxivirikovujig.pdfIn PDF document text
    • http://pevivudawof.epizy.com/piwajigizapanowatarukeri.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/60200025164.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/bitdefender_total_security_2018_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/37852886602.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_off0000dfca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCA 5124 bytes
SHA-256: e8fea05f1a4dc024658a5c5c509946d02a07adc0d663edda6056197428a4b08d
font_01_sfnt_off0000f13a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13A 10504 bytes
SHA-256: cce4b2ab8b73783e613972d5f8c216f0fa4f5020ee6c1eb29cd5be755dcb338f