Malicious PDF — malware analysis report

Static analysis result for SHA-256 71335f67267972e4…

MALICIOUS

PDF

85.5 KB Created: 2021-09-07 02:58:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 643c53f9ca3f5834f91fb35249c27136 SHA-1: 0235dcc6f7368b357a3054e24d8919ff46db8bb9 SHA-256: 71335f67267972e457ad6cbec3235aa8bc5d59c2fc21ec076db7bca68247879f
124 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. It contains numerous embedded URLs pointing to external PDF files, suggesting a link farm or redirection mechanism. The PDF structure and embedded content are consistent with phishing or malware distribution tactics, likely leveraging a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8360

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 http://www.scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/41873059263.pdf In PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bf2db9e71d4---32566349333.pdfIn PDF document text
    • http://drapa-technika.cz/UserFiles/File/32835703804.pdfIn PDF document text
    • https://www.paseppe.gr/ckfinder/userfiles/files/totivugojuruvipi.pdfIn PDF document text
    • http://baovethanglongmb.com/upload/files/dutejokuwololi.pdfIn PDF document text
    • http://tivati.com/uploads/userfiles/file/dinukewaneni.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160edbcb4eda5c---22294098643.pdfIn PDF document text
    • https://przyklejki.pl/userfiles/83276927945.pdfIn PDF document text
    • http://ubest.ru/images/file/rotudofisufuxoxat.pdfIn PDF document text
    • http://essiac.cz/UserFiles/file/78635104.pdfIn PDF document text
    • https://vrindaindia.com/php/joseph/uploads/file/kater.pdfIn PDF document text
    • http://ebbers-schilderwerken.nl/uploads/files/pigatofomakuraxufenuxa.pdfIn PDF document text
    • http://096581878In PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=prosperity+gospel+heresy+pdfPDF link annotation

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Open this report in the interactive analyzer, or submit your own file for analysis.