Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af22a4bff841f85…

MALICIOUS

PDF

78.3 KB Created: 2022-04-11 07:16:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 057e0c4a8d805e36e25df3bfcc5e302b SHA-1: 2d276d301991519fa2720c001572fab92dda103b SHA-256: 4af22a4bff841f8525e081b4e7848ebf48c72aec2adf7ee219db4c54db65d023
134 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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://podar.co.za/YmrXLWy8?keyword=verbos%20irregulares%20en%20ingles%20y%20espa%C3%B1ol%20ejemplos PDF link annotation
    • https://fonamajubeb.weebly.com/uploads/1/3/4/4/134474676/3702693.pdfIn PDF document text
    • https://www.apsar.es/assets_back_office/js/plugins/kcfinder/upload/files/42436321023.pdfIn PDF document text
    • https://alohasafaris.com/files/84602814293.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/162286a0e47a9d---36870632256.pdfIn PDF document text
    • http://stavebnevyrobky.sk/www/upload/files/nisopelasegum.pdfIn PDF document text
    • https://chezgregoire.fr/userfiles/90621438904.pdfIn PDF document text
    • https://fujimerikav.weebly.com/uploads/1/3/4/3/134307110/302dc69b7.pdfIn PDF document text
    • http://poltinka.ru/userfiles/file/mawefugitiwatow.pdfIn PDF document text
    • https://www.fukuyama-ramen.com/editors/kcfinder/upload/files/ropugebijutazenetumig.pdfIn PDF document text
    • http://newo.ru/files/files/70888583767.pdfIn PDF document text
    • http://d2dgroup.net/upload/files/76609721759.pdfIn PDF document text
    • http://phunggia.biz/userfiles/file/46839730576.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/162384acf5dfec---48698123862.pdfIn PDF document text
    • https://www.systemswecare.com/admin/kcfinder/upload/files/difemozirewitudibakibef.pdfIn PDF document text
    • https://zakulupibuwuvos.weebly.com/uploads/1/3/4/6/134686441/vifijililas.pdfIn PDF document text
    • https://nhaccugiare24h.nhaccutienminh.com/uploads/userfiles/file/59653408418.pdfIn PDF document text
    • https://ontozescentrum.hu/tmp/ruxajirazakikesutal.pdfIn PDF document text
    • http://webursitet.org/kcfinder/upload/files/3087382770.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8A9 18108 bytes
SHA-256: 35644bb4ac96482cbc4e2e4b78eeef028e5facbd0bd053e5e63af7f9e56c39bd
font_01_sfnt_off0000f6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C6 11156 bytes
SHA-256: 832c35d83e8df8fe88157d26306ca9ba9c25dbe57dcb38e407e4fd0ac7d638a7
font_02_sfnt_off00011056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11056 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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