Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2e11653411d316…

MALICIOUS

PDF

80.7 KB Created: 2021-09-11 16:54:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 36fcc9de5b2b5be5a76d8a0cf473cd30 SHA-1: 76eef2abf5d48e90d5784d617147ba124c314751 SHA-256: af2e11653411d316209527a4abeca9a0e43408d88098cf993960ede6930a1d5d
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://wastran.ru/uplcv?utm_term=android+convert+wav+to+mp3+programmatically PDF link annotation
    • http://status.cz/UserFiles/File/busakirasipakag.pdfIn PDF document text
    • http://train-in-japan.com/images/blog/file/baxiporiwogozot.pdfIn PDF document text
    • http://derkwoo.com/upload/editor/files/rowubosizatuvixirimatilam.pdfIn PDF document text
    • https://irastuff.com/admin/ckfinder/uploads/files/43960844051.pdfIn PDF document text
    • https://conviviodihera.it/dati/upload/file/dufofinuwim.pdfIn PDF document text
    • http://unibeauty.com.br/ckfinder/userfiles/files/48906214490.pdfIn PDF document text
    • http://pkpneu.cz/userfiles/file/femefe.pdfIn PDF document text
    • http://mengnuanua.com/app/webroot/files/files/70741401710.pdfIn PDF document text
    • http://sjar-tech.com/uploadfile/file///2021090820233441.pdfIn PDF document text
    • http://www.artefuoricentro.it/js/lib/ckfinder/userfiles/files/zazasinaxidazevowazo.pdfIn PDF document text
    • https://lacgl.org/upload/editor/file/zifebewopazajuf.pdfIn PDF document text
    • https://leuphuotcamap.com/uploads/image/files/16783539972.pdfIn PDF document text
    • http://lnaixi.com/userfiles/file/20210906112755_2147191015.pdfIn PDF document text
    • https://praktijkbinnenstad.nl/file/10330950434.pdfIn PDF document text
    • http://wcsps.com.tw/ckfinder/userfiles/files/33902812656.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/7327d552d2e54a3c3a66987b73b2d657/gagagububafito.pdfIn PDF document text
    • http://kesifveotesi.com/files/lamuvuzobezi.pdfIn PDF document text
    • http://www.satunatc.ac.th/ckfinder/userfiles/files/63260218398.pdfIn PDF document text
    • https://optimuselearningschool.com/learning/site/images/uploadfiles/kalugozaja.pdfIn PDF document text
    • http://skogsformedling.se/bilder_umeny/File/1347000584.pdfIn PDF document text
    • http://giaexploring.it/userfiles/files/sexumuzes.pdfIn PDF document text
    • http://chupanhnoithat.vn/upload/files/larunisipobuwok.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_off0000d5b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B8 11108 bytes
SHA-256: 1cf0e1808f60a37a06d859673a2b2786e08e1e787b9bcc3fafeb75d290e918ed
font_01_sfnt_off0000ef7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7B 17444 bytes
SHA-256: 5678e633f8e93a2b392aa2f0858e72ebca398022edf5e267053497bed1b8b548
font_02_sfnt_off00011cbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CBF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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