Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fb899886809b9f…

MALICIOUS

PDF

80.1 KB Created: 2021-09-18 22:45:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 4863fac11b57a520a6cc13e331f92921 SHA-1: 5bf6dd682313e18a73ee9a030b3fa89b89b05260 SHA-256: f2fb899886809b9f62d0505c858de8efb766bfe018a353c222b23d8a856cac46
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file detected by ClamAV as 'Pdf.Phishing.Trojan'. It contains embedded JavaScript, which is often used to exploit vulnerabilities or redirect users. The PDF also functions as a link farm, with numerous external URLs pointing to various domains, many of which are likely disposable, indicating a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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://drafthe.ru/uplcv?utm_term=hot+hd+wallpaper+for+android PDF link annotation
    • http://onlytech-tunisie.com/userfiles/file/2975876399.pdfIn PDF document text
    • http://werder-ritter.de/UserFiles/File/vogurolitozipepaveg.pdfIn PDF document text
    • http://tianlanip.com/filespath/files/20210904102032.pdfIn PDF document text
    • http://ihdbd.org/upload/files/bekipofa.pdfIn PDF document text
    • https://eprobatdz.com/ckfinder/userfiles/files/20781484245.pdfIn PDF document text
    • http://alptw.com/images/files/41048351941.pdfIn PDF document text
    • http://dentish.ru/ckfinder/userfiles/files/69633786728.pdfIn PDF document text
    • https://samajsutra.com/userfiles/files/xotonifozake.pdfIn PDF document text
    • http://hainescentreasia.com/images/file/97040016611.pdfIn PDF document text
    • https://parisnordmedical.fr/docs/file/95415140846.pdfIn PDF document text
    • http://autolubitel-irk.ru/userfiles/file/vakibojuxitefomaguduwif.pdfIn PDF document text
    • http://veszpremkosar.hu/_user/file/89038320944.pdfIn PDF document text
    • https://www.carnesvarejo.com.br/assets/ckfinder/core/connector/php/uploads/files/70020345516.pdfIn PDF document text
    • http://longbienco.com/js/ckfinder/userfiles/files/93260084232.pdfIn PDF document text
    • http://ourconn.com/userfiles/file/202109111132106775.pdfIn PDF document text
    • http://educasters.co/ckfinder/userfiles/files/bagiwaxelebodufumebaf.pdfIn PDF document text
    • http://vegman-kzn.com/ckfinder/userfiles/files/93444070561.pdfIn PDF document text
    • http://cluboutletmoto.net/campannas/file/zalezamekudupiwadipo.pdfIn PDF document text
    • http://newgrids.com/userfiles/file/3844880930.pdfIn PDF document text
    • https://lufty.cz/UserFiles/files/sazadepapefivetiruf.pdfIn PDF document text
    • https://slide-bearing.com/d/files/66996929044.pdfIn PDF document text
    • http://ohmytour.kr/FileData/ckfinder/files/20210906_AFB6AAC7EF9FD398.pdfIn PDF document text
    • http://homokkepek.hu/editor_up/76703701504.pdfIn PDF document text
    • http://innospectrum.eu/hirlevel/file/91910204957.pdfIn PDF document text
    • http://irodori.kir.jp/files/file/tesowinufibudunan.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_off0000d63f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD63F 10504 bytes
SHA-256: 87d3a3187c8e4ac8cdf2cd3c04b7c616ca2aaf115d37feb9c8375db6284c0bea
font_01_sfnt_off0000ee13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE13 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10625 17180 bytes
SHA-256: c1955f4585bcba88a7316f206888a39f9e147f521cd92aff59ce9adb2958d04f

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