Malicious PDF — malware analysis report

Static analysis result for SHA-256 60da7d3a6fc55f4b…

MALICIOUS

PDF

47.0 KB Created: 2021-09-19 08:52:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: c52d807f512a513977721aa24c277b01 SHA-1: c85595474a148dec70e40a1c396f2b5f0e9b384c SHA-256: 60da7d3a6fc55f4bbde4d08414fcc3b64bd6618d6f22d2b7f3ebdea02b72449e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many of which point to disposable hosting and are used in a link farm pattern, suggesting an attempt to distribute malicious content or phish for credentials. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports this. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8030

Heuristics 4

  • 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.
  • 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://queure.ru/uplcv?utm_term=hotel+rwanda+full+movie+free+online+with+english+subtitles PDF link annotation
    • http://pnlestari.com/visitbali/image/files/16036989134.pdfIn PDF document text
    • http://tarnava.eu/user_images/file/86608689122.pdfIn PDF document text
    • https://jocafoto.com/fotos/file/81223070690.pdfIn PDF document text
    • http://czminghe.com/upload/files/56562344585.pdfIn PDF document text
    • http://hasicimosnov.cz/foto/Image/file/memunoxujunuterovotiti.pdfIn PDF document text
    • https://www.aukuras.org/ckfinder/userfiles/files/82231969567.pdfIn PDF document text
    • https://flims.atelierleuthold.ch/userfiles/files/waduvelemaluje.pdfIn PDF document text
    • http://jyotiacademicpress.org/uploads/file/risetafex.pdfIn PDF document text
    • http://automyjka.pl/automyjka.pl/userfiles/file/22653149896.pdfIn PDF document text
    • https://indirimlipin.com/calisma2/files/uploads/vexumu.pdfIn PDF document text
    • http://eminenceinc.com/userfiles/file/gesatobinesulafi.pdfIn PDF document text
    • http://szamosiszerviz.hu/feltoltott/files/xawuzaboruwazopomo.pdfIn PDF document text
    • https://perfecthospitals.com/ckfinder/userfiles/files/nanapavetas.pdfIn PDF document text
    • https://peperita.it/writable/public/userfiles/file/10047486771.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/cd3d1c99916498d8093c5e7dd0872e56/17589919660.pdfIn PDF document text
    • https://igk-lilienthal.de/downloads/94989432680.pdfIn PDF document text
    • http://a1climbing.com/userfiles/files/28912050187.pdfIn PDF document text
    • http://streetnn.ru/data/upload/ck/files/45373974283.pdfIn PDF document text
    • http://kbchina.de/upload/10450331196.pdfIn PDF document text
    • http://agriturismoilnoceto.com/userfiles/files/2446693312.pdfIn PDF document text
    • https://yogaspotny.com/userfiles/file/xulebunasusevejemere.pdfIn PDF document text
    • http://oecschool.com/userfiles/file/78686804555.pdfIn PDF document text
    • https://goldfieldssanddrags.com.au/ckfinder/userfiles/files/26004217154.pdfIn PDF document text