Malicious PDF — malware analysis report

Static analysis result for SHA-256 babc7893e4dca7c7…

MALICIOUS

PDF

353.4 KB Created: 2015-08-26 10:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ad2eb720225d173911002c712480314b SHA-1: 840ef5743ab5a9e60d12842a39999fa327cbd41f SHA-256: babc7893e4dca7c717fdeb0d1c52a644737c1732d90b7bea3ddb1dd7774874c3
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is likely part of a phishing or malware distribution chain. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated, preventing a more detailed analysis of the user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 2

  • 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.
  • 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=viking+inviter+%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://img1.liveinternet.ru/images/attach/c/7//4751/4751638_zhenskie__igruy__simulyatoruy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751575_formuluy__po__fizike_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751880_skachat__programmu__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053bde.bin
ae52a0d3068a092ca29d13b19dfbfb2982b725119dec64dbc63bce2cb507e1ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53BDE 9380 bytes
font_01_sfnt_off00055673.bin
14fe1f39ba5747a78282a712ada67c4250262c033bf70991431f790d9714419c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55673 15044 bytes

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