Malicious PDF — malware analysis report

Static analysis result for SHA-256 da0907efe910350f…

MALICIOUS

PDF

72.3 KB Created: 2021-02-28 14:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4356b9ad5b8527ee29efab9c48cb4183 SHA-1: 291a4447f50c2999fa3b53276c9f5d7ad3392558 SHA-256: da0907efe910350f985022ce0e4fe8b84af44cd3ced385eea4f4063c9b1e7da5
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://pelibifir.ru/award?keyword=ford+mustangs+for+sale+new+south+wales PDF link annotation
    • https://titoboxe.weebly.com/uploads/1/3/0/8/130874676/7033962.pdfIn PDF document text
    • https://zokevuwokonumez.weebly.com/uploads/1/3/4/6/134682223/benesu-goxidij-kunejo-tikinub.pdfIn PDF document text
    • https://jukaregexiw.weebly.com/uploads/1/3/2/8/132816195/4648332.pdfIn PDF document text
    • http://riwotivadejud.sportsontheweb.net/ejercicios_de_trigonometra_1o_bachillerato.pdfIn PDF document text
    • https://gozezitigaja.weebly.com/uploads/1/3/4/3/134340412/gulogegusakaxogizax.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/how_to_use_vent_free_gas_logs.pdfIn PDF document text
    • https://cdn.sqhk.co/begokaxawip/gRUnhgi/vifagum.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/fibowaj.pdfIn PDF document text
    • https://cdn.sqhk.co/kewukapugino/eYiiEu8/wonotakuvasomesep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nowimirozox.atwebpages.com/xefan.pdfIn PDF document text
    • http://wovibojo.onlinewebshop.net/the_seven_laws_of_success_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/kill_bill_whistle_song_piano_sheet_music.pdfIn PDF document text
    • http://zekubegem.epizy.com/63967699251.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/challenge_video_song_bhojpuri.pdfIn PDF document text
    • http://gosaduzunake.myartsonline.com/what_were_the_3_agricultural_revolutions.pdfIn PDF document text
    • http://tososite.onlinewebshop.net/brother_printer_mfc-j5910dw_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/journal_citation_reports_science_edition_thomson_reuters.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_off0000dd76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD76 5368 bytes
SHA-256: bd216006403e7a40a9e79527e01dbe88fefd5f302720b49c3a26bc3f46278d85
font_01_sfnt_off0000efa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA1 10584 bytes
SHA-256: 07c3982bd46820cc63a3f4d42d1a21906dedeb0fdaedd6f10aa2d27bce1bbec3