Malicious PDF — malware analysis report

Static analysis result for SHA-256 a47b1bd2fb17bcad…

MALICIOUS

PDF

86.9 KB Created: 2021-07-03 03:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eca683abf5f474dac15cc6663f960dec SHA-1: 1297f8472960cda84c4283005c5d332f4e088d61 SHA-256: a47b1bd2fb17bcad744edd9b2acc56c2317dbfd105289690a8f85f21efda4092
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'archism.ru', which is likely used to redirect the user to a malicious site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit vulnerabilities or trick users into visiting malicious sites, potentially for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://archism.ru/uplcv?utm_term=what+level+does+sandshrew+evolve+in+pokemon+quest
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fdf6d3f147---45536950838.pdf
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/ebl8e3q412ghgf6k6kpp2dab60/vikenuma.pdf
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/4d3c3de7585a9d1c47fbe91b969f794d/furuxukarig.pdf
    • http://canvangdientu.com/images/file/nexinamelixeforexa.pdf
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d08ecd98d4---wadufirevatil.pdf
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160708b113481a---26676262906.pdf
    • http://www.peretprod.ro/content-images/file/61100344223.pdf
    • http://roxburyhs1987.com/clients/63080/File/81294458227.pdf
    • http://verduciautodemolizioni.it/userfiles/file/66828768949.pdf
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d9d4d2d71a1---nofiwivawamovotenukixal.pdf
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/1031ffb210eb0271d60f749923cf7fb9/bomanileronimu.pdf
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6695fea971---zibasetopanalizexufez.pdf
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16078267b92dae---leranisolaxe.pdf
    • https://bursac.net/userfiles/file/pafuvitiguzukedu.pdf
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16096b06246306---kimetisevebuzup.pdf
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/e7aeb8459c98f64144f97d1da7ae41e4/9588942911.pdf
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/qt93pgad97fgesn8dg3ovjunva/55860486912.pdf
    • http://kimbuunguyen.com/uploads/userfiles/file/60767246475.pdf
    • https://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/be6f05090855b5136cc69ba1f91b5bd3/9295121191.pdf
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/2qn0mv75scvlf2dmvb10s995s4/16386868521.pdf
    • http://humanitool.ru/userfiles/file/zemojuvepobozor.pdf
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd01dc00a2---11259712984.pdf
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/1d6d9c0f313adf7cb9732ed7d4f9a5cc/xujebajurajidisow.pdf
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160ae7f6c607de---xibarafupux.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0a7.bin
c8d74cdea84d0e82132bf658665cb78bdcb6eed9ba3aa7a51c7cbbc62f3effb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A7 16680 bytes
font_01_sfnt_off00011bf6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF6 16792 bytes
font_02_sfnt_off0001340d.bin
69b60addd196eea36368c8a2b2a8b51e089af0c2349aeda846f2efa232e3aa2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1340D 11140 bytes

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