Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8a6d9153e707a48…

MALICIOUS

PDF

67.4 KB Created: 2021-02-27 15:17:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 91af9026704dc4c725e7dcb66e0ab33d SHA-1: 209885ff221bf9dd5735bce549a81c54b07da3c2 SHA-256: c8a6d9153e707a48bfa0c427bc9022940965891653f47789b41ee3f63618da26
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://gimoguvi.ru/award?keyword=head+first+python+2nd+edition+download PDF link annotation
    • https://sujepofuk.weebly.com/uploads/1/3/0/7/130775011/677de1e748be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464524/normal_600d8b6407ce5.pdfIn PDF document text
    • http://lujovotoloxes.iblogger.org/pharmacology_a_nursing_process_approach_7th_edition_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446773/normal_5fc78e0335d82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410448/normal_5fda5b8d1fc57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375070/normal_6033c70fbdfc9.pdfIn PDF document text
    • https://rabavuvorek.weebly.com/uploads/1/3/1/0/131070866/jelerola.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vezoxonu.epizy.com/banove.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/magesijubo.pdfIn PDF document text
    • http://rigetimidolofok.rf.gd/gebisafadet.pdfIn PDF document text
    • http://foripoj.epizy.com/meeting_attendance_sheet_excel_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/dispatcher_c_forms.pdfIn PDF document text
    • http://joxumokuri.epizy.com/60740787832.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/55113073868.pdfIn PDF document text
    • http://getidevip.epizy.com/the_beatles_us_albums.pdfIn PDF document text
    • http://matufuw.rf.gd/72048656938.pdfIn PDF document text
    • http://dasobiviwadodaj.atwebpages.com/what_funny_series_to_watch_on_netflix.pdfIn PDF document text
    • http://vinagojum.rf.gd/casio_g_shock_protection_manual_5146.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_off0000cb99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB99 5416 bytes
SHA-256: 776f639db10afc7ca08a8fdf1f4c05d8c5d526eaef65a982e31425d1af15e8d3
font_01_sfnt_off0000de1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1D 10020 bytes
SHA-256: f3f53cb93f98a8eab69b965c69b959bb445c500c864a0a1990218baf5849d11f