Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aad70cb63911184…

MALICIOUS

PDF

366.1 KB Created: 2015-08-28 11:43:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 268daaaaa3316cf12b0e63efbe1a52b2 SHA-1: 3e77a29490f3b2052cc2b9fd1aace1b38c512510 SHA-256: 7aad70cb6391118453451d95a130fede39eb35be283ab3419ac37e3febe5662e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as malicious, including a critical finding for a link to known malicious redirector infrastructure. The embedded URL 'http://botcraftman.ru/?lip&keyword=%D0%BD%D0%B0%D1%88%D0%B0+%D1%80%D0%B0%D1%88%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8' is the primary indicator of this malicious intent. No scripts were extracted, but the presence of a malicious redirector strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Dropper.Agent-9228177-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9228177-0
  • 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://botcraftman.ru/?lip&keyword=%D0%BD%D0%B0%D1%88%D0%B0+%D1%80%D0%B0%D1%88%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802405_skachat__oki__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802395_dogovor__nayma__zhilogo_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802557_skachat__film__tabor_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000572d2.bin
7d4e152a76aa9f3aa933ba48c398fbe58af41c93ee20c13e079c6a944bd8f150		 pdf-font-stream PDF embedded font (sfnt) at offset 0x572D2 9088 bytes
font_01_sfnt_off00058c11.bin
baa810cbc5fc5f3370f9cbba8994a676e708b216491125437a29b9407b1b4db2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58C11 14040 bytes

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