Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8d94001fa729b9…

MALICIOUS

PDF

73.8 KB Created: 2020-12-30 10:05:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92d483e0a618d792b0580df702e1b386 SHA-1: c295a378270d7796ba9dabc73ec3389221a7ec83 SHA-256: cb8d94001fa729b98aa5916a1176ef9e0c7aefeddb922520feab91742f7777ee
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffi.ru/wb?keyword=dragon%20mania%20legends%20breeding%20warlock%20dragon In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413845/normal_5f9e6c4a4186d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374536/normal_5f8941aa3bbde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500692/normal_5fc02c8e7fdb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410722/normal_5f949f07cf0f4.pdfIn PDF document text
    • https://cdn.sqhk.co/vuxevabuvix/dGfiajf/garena_authenticator_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372384/normal_5f9f119218bd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411501/normal_5fccc49215162.pdfIn PDF document text
    • https://cdn.sqhk.co/lepemafe/RiagfG1/wazerakukam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403540/normal_5fbbd8224e483.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuvimavofo/ecHggpr/46959823743.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_5fa833466c52a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408719/normal_5fbdc69c846d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366628/normal_5f91594ccfe71.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off0000d788.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off0000d788.bin)
    • 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
    • https://savannah.gnu.org/projects/freefont/In extracted file (font_00_sfnt_off0000c70e.bin)
    • http://www.gnu.org/licenses/In extracted file (font_00_sfnt_off0000c70e.bin)
    • http://www.gnu.org/copyleft/gpl.htmlIn extracted file (font_00_sfnt_off0000c70e.bin)
    • http://scripts.sil.org/OFLIn extracted file (font_01_sfnt_off0000d788.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c70e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC70E 6588 bytes
SHA-256: 8ea517b2c6266694ce403208306b360f82b97d238dc6773bee785c6d402077af
font_01_sfnt_off0000d788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD788 5552 bytes
SHA-256: 046045f48c8945c34003ca31f242f4d10796b6f8a425d4dc286ff2cdcd3794f8
font_02_sfnt_off0000ea67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA67 2188 bytes
SHA-256: ee448ea0b942f8e3cc7ddfe0d5dc4c7c6f0a1a62bc92910c35c663b4662f014c
font_03_sfnt_off0000f46c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF46C 10780 bytes
SHA-256: c497dc16e543075b132662388e1cf2d1e2575238bae98bdbaa167daccb6c4180