Malicious PDF — malware analysis report

Static analysis result for SHA-256 54255028cf90566b…

MALICIOUS

PDF

75.4 KB Created: 2021-02-03 09:38:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: edafd7318956a2b10c4414f184bf955e SHA-1: 2239a34cb3a12ef29208d73afff656e7797c55eb SHA-256: 54255028cf90566b3c0ecb6eae4664a6bfad817a66dceea45d8ad598df4ceffb
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://yafferge.ru/wb?keyword=doom%202%20abandonware In PDF document text
    • http://mail-autoscout24.net/fopuvovitadewudasevalouy6ik.pdfIn PDF document text
    • http://tihefers.online/fast_notepad_for_pcv1n72.pdfIn PDF document text
    • http://edayafar.xyz/53504690322qpfpf.pdfIn PDF document text
    • https://cdn.sqhk.co/fotajoge/ySkgghg/rusted_wardate_site.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401546/normal_5ff6530b50dcb.pdfIn PDF document text
    • http://qrastenmap.online/512659232108uc52.pdfIn PDF document text
    • https://zudomizat.weebly.com/uploads/1/3/5/3/135308615/doduwagazibopov.pdfIn PDF document text
    • http://vzruvayarttraff.xyz/7_minute_simple_tabata_workoutrogmd.pdfIn PDF document text
    • https://zazalefofano.weebly.com/uploads/1/3/4/5/134578352/609867.pdfIn PDF document text
    • https://bimozasobo.weebly.com/uploads/1/3/1/3/131398313/0a0e2.pdfIn PDF document text
    • https://karesaxu.weebly.com/uploads/1/3/5/3/135392924/2214509.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465131/normal_60035a726a3d6.pdfIn PDF document text
    • http://goodnaturak.space/wood_joints_in_classical_japanese_architecture_espanolvk5xz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369936/normal_6008436e2736a.pdfIn PDF document text
    • https://cdn.sqhk.co/nejibija/jyXvd9U/18147216592.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e9a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A4 5124 bytes
SHA-256: ab8fc3ace2b98a21702b23d838655d0cf789efadc7b9c525601f8320f797ecea
font_01_sfnt_off0000fb0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0B 11320 bytes
SHA-256: 76e2d593b5fd5b8f76e8a46c62780283eb0982e1fc5a8c19eefa09f7945e57cc