Malicious PDF — malware analysis report

Static analysis result for SHA-256 5daf63ec4c2c1642…

MALICIOUS

PDF

74.0 KB Created: 2021-01-29 08:29:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b7853e8d76ec7a1ff1760f4660813b09 SHA-1: 641a21f031df6cbeaabb448ff598a3143e16ef23 SHA-256: 5daf63ec4c2c1642dd96d5ef5e47d1525acb024f45b3e9596c8391e583939180
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wb?keyword=extreme%20jet%20car%20racing%20game%20download PDF link annotation
    • http://gozipoxeget.iblogger.org/harry_potter_acceptance_letter_party_invitation_template.pdfIn PDF document text
    • https://vomediwanuxorat.weebly.com/uploads/1/3/4/3/134327005/towafomotin-sunej-pefagovotudi.pdfIn PDF document text
    • https://cdn.sqhk.co/wifavizen/jeITlic/salespulse_school_login.pdfIn PDF document text
    • https://salobomuxalevi.weebly.com/uploads/1/3/1/0/131070078/7996812.pdfIn PDF document text
    • https://lawejuja.weebly.com/uploads/1/3/0/7/130740077/vivomifam.pdfIn PDF document text
    • https://cdn.sqhk.co/rifojimuna/pwWUyhi/dead_paradise_5_download.pdfIn PDF document text
    • https://cdn.sqhk.co/difigobon/Rvwjiij/92813169081.pdfIn PDF document text
    • http://legexenajulejof.iblogger.org/93555924266.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/RY9ia2R/zig_zag_revolver_3d_printed.pdfIn PDF document text
    • https://dabusoze.weebly.com/uploads/1/3/4/5/134585091/3aec8c48acc.pdfIn PDF document text
    • https://zugudomumomaxix.weebly.com/uploads/1/3/5/3/135324912/zefuwijuvaxusagi.pdfIn PDF document text
    • https://cdn.sqhk.co/kasavakujosi/gj9RG4A/bell_bird_australia_images.pdfIn PDF document text
    • https://cdn.sqhk.co/wapogade/dAjejij/rididaxuvewofix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/wallpaper_for_mobile_phone.pdfIn PDF document text
    • http://genenapukiral.epizy.com/accounts_payable_resume_format_for_bpo.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/34252301324.pdfIn PDF document text
    • http://borakenibafet.rf.gd/drama_brilliant_legacy_sub_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/bloody_stream_flute_sheet_music.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_off0000e468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE468 5276 bytes
SHA-256: dcf955c94344abdcbb0585fa5e46fa9c585782abdbc4fd9c205d4deeddc349d6
font_01_sfnt_off0000f65a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF65A 10824 bytes
SHA-256: 044aac5c4f4017e369c86aa88678608cc931f7eb051398d30f45fd7b64806d9d

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