Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e93a6b2dc1912a7…

MALICIOUS

PDF

66.5 KB Created: 2021-09-19 07:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: f5bd251e240489120513ab2a8a6234ea SHA-1: 579110e8493a7939401ee6c9e98ecf81e227c6ac SHA-256: 9e93a6b2dc1912a73833ccbd3b380a8bae4d236cbbd52fa814845f1d4a84a264
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are part of a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of UTM parameters in some URLs suggests an attempt to track user engagement with the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7964

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
  • 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
  • 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://laborke.ru/uplcv?utm_term=crack+photoshop+cs5 PDF link annotation
    • http://china-miyaco.com/img/file/202195144641.pdfIn PDF document text
    • https://begili.com/uploads/image/files/jivisopegidosifimegasasu.pdfIn PDF document text
    • https://pasarangroup1.com/contents/files/45670780301.pdfIn PDF document text
    • http://sireny.net/share/files/sazexuwizefudamugovebajen.pdfIn PDF document text
    • http://bygreenpure.com/userfiles/file/52143512792.pdfIn PDF document text
    • http://hoangnampte.vn/quangbasanpham/app/webroot/upload/image/files/6957800403.pdfIn PDF document text
    • https://www.nvsrolko.org/ckfinder/userfiles/files/3684593995.pdfIn PDF document text
    • https://petribax.nl/userfiles/file/feduveresa.pdfIn PDF document text
    • https://giraffeng.net/infodaily/gen-ckfinder/userfiles/files/fuvureg.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/167ff96fb6f9fd1631b0aedb1a9627cf/46110188767.pdfIn PDF document text
    • http://thanhcongtechtra.com/upload/files/68051623460.pdfIn PDF document text
    • https://forexinc.ca/upload/editor/file/53046029220.pdfIn PDF document text
    • http://balmybnb.com/t/tutorfirm/uploads/ck/files/bumopezof.pdfIn PDF document text
    • http://thangmayedex.com/webroot/img/files/lowonepumonaxezaw.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613a17b5087c7---83730908330.pdfIn PDF document text
    • https://bhsbeacon.com/FCKeditor/file/19943830104.pdfIn PDF document text
    • https://powerliteaac.com/userfiles/file/biretamolizaro.pdfIn PDF document text
    • https://optimuselearningschool.aels.edu/learning/site/images/uploadfiles/13809849874.pdfIn PDF document text
    • https://tese.in/ckfinder/userfiles/files/newidilapok.pdfIn PDF document text
    • http://marketingnews.fr/images/file/rediwufafulo.pdfIn PDF document text
    • http://mathcountsoutreach.org/userfiles/file/powavudu.pdfIn PDF document text
    • http://kisito.com/userfiles/file/xorubazasowiv.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD732 17940 bytes
SHA-256: bf03d17b2414afcb7c184f7ae5d6ab21478637a3787aa94d7c6f839fbd00817e

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