Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68760803ad83de7…

MALICIOUS

PDF

356.2 KB Created: 2015-08-29 11:06:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 2412af23a4ed241a822c1d90e85902e4 SHA-1: f57acb5e7d97b6c4dc0c18ec9dfda120e857ae1c SHA-256: d68760803ad83de7e55ec582d9f8d0688c023507129b9d451fdadc8aef6fdf1c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a high ML score. ClamAV also detected it as Pdf.Dropper.Agent-9025240-0. The embedded URL points to botcraftman.ru, which is identified as a known malicious redirector. The document body is heavily obfuscated and truncated, preventing a detailed analysis of its content, but the presence of a malicious redirector strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-9025240-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9025240-0
  • 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%BF%D1%80%D0%B8%D0%BA%D0%B0%D0%B7+%D0%BF%D0%BE+%D0%B2%D0%B0%D0%BA%D1%86%D0%B8%D0%BD%D0%BE%D0%BF%D1%80%D0%BE%D1%84%D0%B8%D0%BB%D0%B0%D0%BA%D1%82%D0%B8%D0%BA%D0%B5&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829839_scenariy__dnya__rozhdeniya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829862_babymozg__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829818_praktikum__po__russkomu_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054b70.bin
3bc3c29cebd9dc03f58eee97b9a04073d86e95b157aac98da10363a4fb51dedb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54B70 8080 bytes
font_01_sfnt_off000562b0.bin
23e6faee31764a6cc94086b32e25c9f3ce9fd5f8a31ef9b93d0696d44e5b6674		 pdf-font-stream PDF embedded font (sfnt) at offset 0x562B0 15296 bytes

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