Malicious PDF — malware analysis report

Static analysis result for SHA-256 989fc5b3b3368198…

MALICIOUS

PDF

75.6 KB Created: 2021-03-04 22:44:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 05a45a53a729368ac207b54b6f221eec SHA-1: 9dddd213da0bead27113ce546dfe421252446c1d SHA-256: 989fc5b3b336819816574c2b315168024d42a032cc65766296b0a6c28d27bbeb
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://jacksth.ru/aws?utm_term=wolf+of+wall+street+gifts PDF link annotation
    • http://jukojadijomefar.medianewsonline.com/how_to_turn_on_proform_2000_treadmill.pdfIn PDF document text
    • https://cdn.sqhk.co/merabuvi/ij4gejh/mg_liker_app_for_facebook.pdfIn PDF document text
    • https://cdn.sqhk.co/gotuxixovumu/x9jj6mT/69613207892.pdfIn PDF document text
    • https://cdn.sqhk.co/junigofulum/fcqgLhf/metro_speedway_trophy.pdfIn PDF document text
    • https://cdn.sqhk.co/takabalal/hgjdgeL/rerufutexejimenivusexebu.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/american_culture_worksheets.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutesilo/dzxgchj/zenizeruwunir.pdfIn PDF document text
    • https://cdn.sqhk.co/xubewarow/eickgiv/find_friends_app_for_pc_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wexovezojab/kdicS61/16877283066.pdfIn PDF document text
    • http://vegofejolafud.mygamesonline.org/how_to_workout_your_gluteus_maximus.pdfIn PDF document text
    • https://cdn.sqhk.co/gobenebovi/hwT9yhi/smart_tape_measure_for_your_body.pdfIn PDF document text
    • https://cdn.sqhk.co/zaweniwefi/njcFKig/93999396513.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xinifaduzinuvu.onlinewebshop.net/3939876471.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/cosmic_microwave_background_radiation_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4c33985-3df9-4af4-9388-e8c38ef5c89d/how_to_write_a_risk_benefit_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4e048a2-655d-434b-924f-6bc7773e573c/xodegesabelukari.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/zekube.pdfIn PDF document text
    • http://namepafubi.atwebpages.com/tracfone_lg_rebel_4_review.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_off0000e831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE831 5040 bytes
SHA-256: 64644eb9a6016ca3ebd3ff7c83ca5364de7d1e4247a151b5a77d64aac2d42012
font_01_sfnt_off0000f982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF982 12352 bytes
SHA-256: e6ca5aba2be23d033b167ab7906c8d5384dbc90c32974684c757c92a1b4d0ae6