Malicious PDF — malware analysis report

Static analysis result for SHA-256 4453f092005fc864…

MALICIOUS

PDF

116.6 KB Created: 2021-10-20 14:10:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 06422aefc138c44ed376ffea282dcc8a SHA-1: 9feb792cb5ba3672db03a39c6e96fbd175394a92 SHA-256: 4453f092005fc864128b3f2e0a6acf237036e81e8438dd349b2599d75e649fe9
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which point to potentially disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for executing malicious code within PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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 http://khamranghaiphong.com/upload/files/50328859667.pdf In PDF document text
    • http://bndweb.nl/upload/files/69165932428.pdfIn PDF document text
    • http://ottomaniantextile.com/userfiles/file/disadotukubefekipaz.pdfIn PDF document text
    • https://pointwebhost.com/calisma2/files/uploads/zonepukugosopezadub.pdfIn PDF document text
    • http://investin-khj.ir/ckfinder/userfiles/files/84267679877.pdfIn PDF document text
    • http://cablexconsulting.com/Upload/file/tewusen.pdfIn PDF document text
    • http://svenskafik.se/uploads/fckeditor/file/6953140220.pdfIn PDF document text
    • https://i-chat.tw/js/ckfinder/userfiles/files/wuzododifoneloxojovu.pdfIn PDF document text
    • http://xn--90aoaidn.xn--p1ai/ckfinder/userfiles/files/5833547575.pdfIn PDF document text
    • https://willmarareachamber.com/ckfinder/userfiles/files/jagojozijutus.pdfIn PDF document text
    • https://bolahijau.com/contents/files/39834712737.pdfIn PDF document text
    • http://medicamarsala.it/userfiles/files/xivalibisuxojavorozesade.pdfIn PDF document text
    • https://stpm-sa.com/userfiles/file/metoroxuka.pdfIn PDF document text
    • https://ivanamihic.com/files/nimegarag.pdfIn PDF document text
    • http://sbkf.org/files/files/womirezimafikudidini.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/0443892128723bfdd60158190eec4be2/96988982185.pdfIn PDF document text
    • https://bloomeng.com/uploads/pinegudalixovamufe.pdfIn PDF document text
    • https://www.esfa.bg/root/ckfinder/userfiles/files/39076138245.pdfIn PDF document text
    • http://xinge168.com/uploads/files/20211006030410_704930.pdfIn PDF document text
    • https://estduquebec.com/scripts/php/xenocode/lib/ckfinder/userfiles/files/jorifunapebozepinikomi.pdfIn PDF document text
    • http://quartierdete.fr/uploads/fckeditor/file/ruwoxekabafolebatuj.pdfIn PDF document text
    • http://soluzionebenessere.eu/userfiles/files/51027881925.pdfIn PDF document text
    • http://caydinhlang.net/userfiles/image/file/zuvanikagizonodazajogava.pdfIn PDF document text
    • http://aftp.bg/userfiles/file/tuvasot.pdfIn PDF document text
    • https://holyfamilyhospitals.com/ckfinder/userfiles/files/66364831175.pdfIn PDF document text
    • http://hoaisonland.vn/upload/files/33391988571.pdfIn PDF document text
    • https://www.speeddating.lt/speeddating/ckfinder/userfiles/files/fiwufonoxuwojosigipijeto.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/u-9XGpgKpwY/uplcv?utm_term=code+words+for+dirty+thingsPDF link annotation
    • 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_off0001615b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1615B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001796d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1796D 19320 bytes
SHA-256: daf0b7539ede8d1146feee978db28bed9944865ec6e3ba75b6cfb0b16794983d
font_02_sfnt_off0001ac09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AC09 10656 bytes
SHA-256: 5acf97114c3aeb2c24e546b49ad15847b2996bf929d62e739a06e1a6bfba9761