Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6e8b3d5e4bbd2fb…

MALICIOUS

PDF

88.1 KB Created: 2021-01-14 20:14:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-17
MD5: 04b405534bce78d16e785036aa88aff2 SHA-1: 6275b77aef38167e6cf07cb11cc215e01471b62a SHA-256: b6e8b3d5e4bbd2fba5fabaf60ab3206e67bcbc0c83a2531f4987ebe931ef481b
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 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.
  • 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://nedixizudunosil.weebly.com/uploads/1/3/1/4/131483200/1e26ff9.pdf In PDF document text
    • https://sojagifuwolu.weebly.com/uploads/1/3/4/6/134689160/7559235.pdfIn PDF document text
    • https://cdn.sqhk.co/pivugisaxap/Uuhi1jh/nidoxom.pdfIn PDF document text
    • https://lewixixidofuj.weebly.com/uploads/1/3/4/3/134393564/8790222.pdfIn PDF document text
    • https://dugitesabisaxo.weebly.com/uploads/1/3/4/3/134392589/resutirijenew.pdfIn PDF document text
    • https://norajaxufok.weebly.com/uploads/1/3/4/6/134611117/6639697.pdfIn PDF document text
    • https://moketotal.weebly.com/uploads/1/3/4/3/134315425/2413c12d0b.pdfIn PDF document text
    • https://vowimusu.weebly.com/uploads/1/3/4/6/134655535/5080f8085d56.pdfIn PDF document text
    • https://bizotimugir.weebly.com/uploads/1/3/1/1/131164076/e356f6fcc22e5.pdfIn PDF document text
    • https://site-1171687.mozfiles.com/files/1171687/99030959848.pdfIn PDF document text
    • https://ralututoj.weebly.com/uploads/1/3/4/4/134457658/4d5e42f9989f.pdfIn PDF document text
    • https://bikigevoxepasi.weebly.com/uploads/1/3/4/7/134716722/5141317.pdfIn PDF document text
    • https://site-1175531.mozfiles.com/files/1175531/54626286791.pdfIn PDF document text
    • https://traffine.ru/123?utm_term=ucsd+cse+100+syllabusIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00010413.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00010413.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
    • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off00010413.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off00013d84.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off00013d84.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10413 5264 bytes
SHA-256: b24945948111755619d7239e5ea6ac4ee5da27e09e18ec721642cba7c2feb442
font_01_sfnt_off00011616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11616 11520 bytes
SHA-256: 5c28ae3b26b0f6be64f265de19a8aa15ec13978d14cb0bfb6a0f4eaa4c1dcd3f
font_02_sfnt_off00013d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D84 16344 bytes
SHA-256: f3b95f1269985bafc3dfb9b5b35e76df8a4d57039a143c013aed99c7cf3a4a89