Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e1740640a4e71f8…

MALICIOUS

PDF

76.8 KB Created: 2022-03-29 19:46:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-09
MD5: dae506b22ffee194abf93838d647c2ee SHA-1: 14378f93b21a450c26b4ac180c74f4ac918084f8 SHA-256: 5e1740640a4e71f873b0de795d107dacb0d013efce067bc10f74d217f5d6171c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body contains numerous embedded URLs disguised as links to PDF files, likely intended to redirect users to malicious sites or download further malware. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM further suggests a link farm designed for SEO manipulation, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 http://radtel-sport.pl/userfiles/file/20937698126.pdf In PDF document text
    • https://dosidebeg.weebly.com/uploads/1/3/5/3/135318632/6814803.pdfIn PDF document text
    • http://ukrfirework.com/images/file/xorutunubonusuvagulokij.pdfIn PDF document text
    • https://cuatudongnhatrang.com/uploads/files/56839662075.pdfIn PDF document text
    • http://dalaichau.com/files/5269921014.pdfIn PDF document text
    • https://rogidalot.weebly.com/uploads/1/3/1/6/131636841/zojomutovupujof_xikobidudifula_roxipes_vezuduzat.pdfIn PDF document text
    • https://karaari.leaddeehub.com/userfiles/files/vadebiderewebototugatori.pdfIn PDF document text
    • https://runigofotizete.weebly.com/uploads/1/3/4/4/134433234/zutadogu-pejiduras-lemerasa-liluwojeruv.pdfIn PDF document text
    • http://nijiclothing.com/assets/ckeditor/kcfinder/upload/files/pinijebabimibunososoweweg.pdfIn PDF document text
    • https://miwawedunosojoz.weebly.com/uploads/1/3/1/6/131606480/7275371.pdfIn PDF document text
    • http://iuppiteredizioni.it/kcfinder/upload/files/tularemasuximonuxubux.pdfIn PDF document text
    • https://reparationmobile.net/userfiles/file/46180399066.pdfIn PDF document text
    • https://showerdrainplus.com/uploads/files/202203011615165878.pdfIn PDF document text
    • https://gira-rozetki.su/kcfinder/upload/files/xuliwatot.pdfIn PDF document text
    • https://lopetumidola.weebly.com/uploads/1/3/3/9/133989387/4190296.pdfIn PDF document text
    • https://podar.co.za/YmrXLWy8?keyword=how%20to%20use%20salton%20electric%20pressure%20cookerPDF link annotation
    • https://drnanemilk.com/tctt/sites/aaa/file/85012718697.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_off0000c99c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c99c.bin)

Related samples 5

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_off0000c99c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC99C 10636 bytes
SHA-256: cc49d703673fce326251a16bb7a76a49dea0ceddfb0fde9b28f0124bbaace1fa
font_01_sfnt_off0000e21d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21D 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0000f8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BC 17132 bytes
SHA-256: 5bb6675d40c22837321275f0a3f47d654c6544d1877000bee2064172cb4512fb

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