Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b2c2f32ff582557…

MALICIOUS

PDF

11.2 KB Created: 2015-07-15 14:41:02 +04:00 Authoring application: DOMPDF
MD5: e68702ffa321de7e4e19d65b407503b0 SHA-1: fbcd2646b1421795c63fb572a139c680128665c7 SHA-256: 4b2c2f32ff582557078407a49f24b6619bd81d35eae001603f52b7f6cf36b6d9
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded URLs, forming a link farm. This is indicative of a malicious SEO or content distribution scheme. The ML classifier also flagged the PDF as malicious with high confidence. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9048

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://photo-file.ru/index.php?article=921.1&wehsa=1&pdf=921
    • http://www.motz73.fr/index.php?article=547.1&vrqcc=1&pdf=547
    • http://aksoynet.nl/index.php?article=1239.2&cwiie=2&pdf=1239
    • http://photo-file.ru/index.php?article=1495.1&wehsa=1&pdf=1495
    • http://www.mantrabeautybar.ca/index.php?article=650.1&rukbv=1&pdf=650
    • http://photo-file.ru/index.php?article=1223.1&wehsa=1&pdf=1223
    • http://satarahealthcare.com/index.php?article=2343.1&tpoox=1&pdf=2343
    • http://www.lole.cl/index.php?article=2164.1&fadfz=1&pdf=2164
    • http://www.faceausoleil.com/index.php?article=1512.2&ipbvv=2&pdf=1512
    • http://photo-file.ru/index.php?article=775.1&wehsa=1&pdf=775
    • http://photo-file.ru/index.php?article=1276.1&wehsa=1&pdf=1276
    • http://photo-file.ru/index.php?article=953.1&wehsa=1&pdf=953
    • http://regionori.ru/index.php?article=894.1&lcnlt=1&pdf=894
    • http://photo-file.ru/index.php?article=1644.1&wehsa=1&pdf=1644
    • http://kontraportal.com/index.php?article=1681.1&szjdf=1&pdf=1681
    • http://photo-file.ru/index.php?article=10.1&wehsa=1&pdf=10
    • http://zamca.ro/index.php?article=1800.1&jxoor=1&pdf=1800

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