Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a103718aa5818ab…

MALICIOUS

PDF

382.6 KB Created: 2015-08-28 11:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 382437091dea06c17cd2b63ea098ab07 SHA-1: 530b9267b41cd09e4d67ba823f966d563790b500 SHA-256: 3a103718aa5818abc9d1171287825d405f2cb96b084c44333e51769337a3f216
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The presence of this link suggests the document is designed to lure users to a malicious website. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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=%D0%B4%D0%B6%D0%BE%D0%BD%D0%B0%D1%82%D0%B0%D0%BD+%D1%84%D1%80%D0%B0%D0%BD%D0%B7%D0%B5%D0%BD+%D1%81%D0%B2%D0%BE%D0%B1%D0%BE%D0%B4%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//4802/4802364_google__chrome__poslednyaya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802386_skachat__gta_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802576_skachat__knigi__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b237.bin
1addf6190887d3bfc8d2cd63c4359e46cda633b2014f24b3c88cb5a7b2e87f97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B237 8412 bytes
font_01_sfnt_off0005cac2.bin
535b5d4c272b6434f4de796c4cb125d39cdcbec89f5b0636cdf098f1fbd29ee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAC2 15864 bytes

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