Malicious PDF — malware analysis report

Static analysis result for SHA-256 97c7d5063123ad1c…

MALICIOUS

PDF

69.7 KB Created: 2021-02-26 16:35:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a220f4446e8c9a47e7dc586f4ccc1046 SHA-1: ec7a24c7a0758ab2f906f4313a8e0632846e28fa SHA-256: 97c7d5063123ad1ca1a608dba64193d1ed6e633c756bbe0cf672e2487db926e6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/award?keyword=digital+design+speakers+12 PDF link annotation
    • https://pejegenipejixe.weebly.com/uploads/1/3/4/8/134848799/73e8199e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368475/normal_5fd13000ab050.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496571/normal_602ad42e4de49.pdfIn PDF document text
    • https://nuvafuriwevejuf.weebly.com/uploads/1/3/2/8/132814848/1ecae4913a.pdfIn PDF document text
    • https://mijutadozas.weebly.com/uploads/1/3/4/5/134590660/3729309.pdfIn PDF document text
    • https://dodoxatufasiw.weebly.com/uploads/1/3/2/6/132681482/nuwotuzegagox_benomif_tojedomu.pdfIn PDF document text
    • https://xixemoxutosiseg.weebly.com/uploads/1/3/4/4/134473276/8240b0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369760/normal_6032c94f8dfb8.pdfIn PDF document text
    • https://sizuwebon.weebly.com/uploads/1/3/0/8/130814729/5610079.pdfIn PDF document text
    • https://cdn.sqhk.co/wezupobuwab/fYgdhjr/medusa_kampf_der_titanen_2010.pdfIn PDF document text
    • https://teribupugabi.weebly.com/uploads/1/3/4/8/134852699/8659925.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380237/normal_60135dd7a627b.pdfIn PDF document text
    • https://cdn.sqhk.co/govizanorev/hahcgd8/you_are_my_only_one_lyrics_yellowcard.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/K5vjcqQ/mipoluvusiripil.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/davubewu/kali_linux_ubuntu.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_off0000ca80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA80 5376 bytes
SHA-256: 0f5265e380fe36e5a6d401c6c0f127b16503c01ed2f3e087bc900c116cebc13f
font_01_sfnt_off0000dce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE2 14184 bytes
SHA-256: e8b1d8ceaef75652f1f0e7f277be4d5abee51a97a433195c1980fcf7537c00de