Malicious PDF — malware analysis report

Static analysis result for SHA-256 634cab9f542e17cc…

MALICIOUS

PDF

75.5 KB Created: 2022-04-09 20:42:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-28
MD5: db742554b141b1b560f06cfcf51187b6 SHA-1: 5d6f3ebc919e8a42a958e3419ace1d25b16ce096 SHA-256: 634cab9f542e17ccd967a78257f71c9f830e3042dfd274caeab21e70e3326085
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://zirodamabesad.weebly.com/uploads/1/3/0/7/130740068/pokogixin-jovulukaz.pdf In PDF document text
    • http://tamezou.com/upload/ckfinder/files/lawafeduzevuve.pdfIn PDF document text
    • https://suponililodu.weebly.com/uploads/1/3/4/3/134322256/7138592.pdfIn PDF document text
    • https://febujularezot.weebly.com/uploads/1/3/0/8/130813651/93d49f59605.pdfIn PDF document text
    • https://arch.ua/ckfinder/userfiles/files/69630385425.pdfIn PDF document text
    • http://xn--j1aai7d.xn--p1ai/userfiles/file/redemaloviselululul.pdfIn PDF document text
    • http://alptw.com/images/files/juxoberexubuluja.pdfIn PDF document text
    • https://kotedeturu.weebly.com/uploads/1/3/1/6/131606402/viwawunasi.pdfIn PDF document text
    • http://plenerowe.kbo.pl/ckfinder/userfiles/files/ruvudu.pdfIn PDF document text
    • http://vp-concept.ch/app/webroot/kcfinder/upload/files/mewezidaxo.pdfIn PDF document text
    • https://xifekuvazunavel.weebly.com/uploads/1/3/4/7/134748582/xonor.pdfIn PDF document text
    • http://cdmvt.cz/sites/default/files/vixipatovodalukusov.pdfIn PDF document text
    • https://lulofaki.weebly.com/uploads/1/3/1/4/131453598/palivebifasosib.pdfIn PDF document text
    • http://dharkaninternational.com/survey/userfiles/files/jekomovazuxogekukuwusore.pdfIn PDF document text
    • http://euro-service.org/kcfinder/upload/images/62468598509.pdfIn PDF document text
    • https://rofotemajanati.weebly.com/uploads/1/3/4/4/134497193/vopiredamekobofasavi.pdfIn PDF document text
    • https://giriwegulajujup.weebly.com/uploads/1/3/4/3/134320738/poruzogavemaji-kipab-pifemu-vufokekezemofeg.pdfIn PDF document text
    • https://onishi-kyosendo.jp/archive/77887434365.pdfIn PDF document text
    • http://iscelenie.info/files/file/lidolirotudigudixigunewu.pdfIn PDF document text
    • https://zonarawe.weebly.com/uploads/1/3/4/0/134040860/d7350de.pdfIn PDF document text
    • https://zonexaxu.weebly.com/uploads/1/3/4/7/134700630/ragetuzareg_tufatugud.pdfIn PDF document text
    • https://degovaborozum.weebly.com/uploads/1/4/1/3/141354723/dujataf.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fc7b79184f2---68226560021.pdfIn PDF document text
    • https://yoyep.co.za/YmrXLWy8?keyword=english%20advanced%20vocabulary%20exercises%20onlinePDF link annotation
    • http://philippetardieu.com/kcfinder/upload/files/30965548161.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000c1c3.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c1c3.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c1c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1C3 11056 bytes
SHA-256: 1ef04236d3a7c4476b331e32fd5bd2585f265808c0bfacdd8167efd993bcab22
font_01_sfnt_off0000db3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB3A 17032 bytes
SHA-256: c6341d3ea1b89f74c1632ead1e41f2edbadd065cd6412e8b6d4b023adf3f07ac
font_02_sfnt_off000107fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107FA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1