Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3ca130690eec03…

MALICIOUS

PDF

76.1 KB Created: 2021-10-09 04:00:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: c371bf4a3200adad05b46e6b61573044 SHA-1: da106faba9d950b366a55c394edc147d484db58d SHA-256: 4e3ca130690eec03c3602d42e8538976360c46e7be9b67a33c67220c4890ba9f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • 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://crysiq.ru/uplcv?utm_term=ask+chemistry+questions+and+get+answers+for+free PDF link annotation
    • http://gnatowski.pl/attachments/file/24612921674.pdfIn PDF document text
    • https://healthmatters.me/userfiles/file/25106260333.pdfIn PDF document text
    • http://thietbidienmpe.net/upload/files/nakomigajif.pdfIn PDF document text
    • http://win-sonic.com/ck_imgs/files/sorojudezogogu.pdfIn PDF document text
    • http://bibrka-school.org.ua/ckfinder/userfiles/files/27978768277.pdfIn PDF document text
    • http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/pesaxuvuzufadisijole.pdfIn PDF document text
    • http://squarcialupirelaxinchianti.com/writable/public/userfiles/file/teduzizudiwopit.pdfIn PDF document text
    • https://postelezmasivu-olomouc.cz/ckfinder/userfiles/files/mevuwegare.pdfIn PDF document text
    • https://sskundal.com/userfiles/file/23009410147.pdfIn PDF document text
    • http://dyglas.com/userData/board/file/63287597760.pdfIn PDF document text
    • https://mitrasuksesku.com/userfiles/file/66474223438.pdfIn PDF document text
    • https://melnikhouse.com/userfiles/file/kexamazimiped.pdfIn PDF document text
    • https://hoanghaie.com/Images_upload/files/33063166540.pdfIn PDF document text
    • http://lg-palette.com/upload/files/lotugazeroje.pdfIn PDF document text
    • http://kriosispl.com/cote_dor_import/admin/ckfinder/userfiles/files/wetedemozededijer.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/xelegosetik.pdfIn PDF document text
    • http://stitesattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/76667846798.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/960986698a30a9170c8eddc5a668b277/devatijija.pdfIn PDF document text
    • http://lblussana.it/images/file/24788723854.pdfIn PDF document text
    • https://strechybenesov.cz/content/jerewizi.pdfIn PDF document text
    • https://fontaine-eva.fr/userfiles/files/rexopiwoxolifotupaboduzof.pdfIn PDF document text
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/8e644688584413628b15f0d2eeeddfe2/4273662448.pdfIn PDF document text
    • https://alebusph.centralcms.cloud/galeria/files/78022765063.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c54d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC54D 11396 bytes
SHA-256: 3602540213a07c1b259c11f267704d8525911b6842bf78c3c2ac3dac90a113a2
font_01_sfnt_off0000df9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9D 16684 bytes
SHA-256: 5fde4978e54ce9e4abebe689e7fa93ad8bcd727a59f649a68b6656b34e55658e
font_02_sfnt_off00010a19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A19 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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