Malicious PDF — malware analysis report

Static analysis result for SHA-256 52717671a1fc783d…

MALICIOUS

PDF

11.5 KB Created: 2015-07-15 14:42:41 +04:00 Authoring application: DOMPDF
MD5: c479aafafc6494fa16654388c20d9249 SHA-1: dad89bed2292728b6b226b5d1031146b98bbb276 SHA-256: 52717671a1fc783ddd7444cc07a7acfaf6e43539437e493dc7c0cb987a8e53cf
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a significant number of embedded URLs, indicating a link farm. The primary attack pattern appears to be SEO poisoning or a similar technique to lure users to potentially malicious websites. No scripts were extracted from this sample, and the document body is heavily obfuscated, making it difficult to determine the exact nature of the lure beyond the presence of numerous external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8959

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=1262.1&wehsa=1&pdf=1262
    • http://satarahealthcare.com/index.php?article=2090.1&tpoox=1&pdf=2090
    • http://ura-sandoz.com/index.php?article=462.1&nydkb=1&pdf=462
    • http://photo-file.ru/index.php?article=1396.1&wehsa=1&pdf=1396
    • http://www.mantrabeautybar.ca/index.php?article=543.1&rukbv=1&pdf=543
    • http://photo-file.ru/index.php?article=10.1&wehsa=1&pdf=10
    • http://msobo.fr/index.php?article=1848.2&dfkro=2&pdf=1848
    • http://kameraturva.net/index.php?article=720.4&ghbga=4&pdf=720
    • http://marmoleraflores.com/index.php?article=1851.2&qultr=2&pdf=1851
    • http://photo-file.ru/index.php?article=669.1&wehsa=1&pdf=669
    • http://photo-file.ru/index.php?article=1865.1&wehsa=1&pdf=1865
    • http://photo-file.ru/index.php?article=1462.1&wehsa=1&pdf=1462
    • http://les-zephyrs.com/index.php?article=671.2&ylevy=2&pdf=671
    • http://photo-file.ru/index.php?article=1350.1&wehsa=1&pdf=1350
    • http://larasstore.com/index.php?article=101.2&qcpsq=2&pdf=101
    • http://photo-file.ru/index.php?article=1159.1&wehsa=1&pdf=1159
    • http://propertarian.net/index.php?article=262.1&jdxyr=1&pdf=262

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