Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7df96d40150bc44…

MALICIOUS

PDF

353.4 KB Created: 2015-08-26 18:56:22 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 0187a1cf35d112037a0b6409017f8958 SHA-1: 6330de5758cc40adeab03ec917024dda59330948 SHA-256: e7df96d40150bc44def21048e7ce560e77fbd6bd166d166e46a7c2ac8ed4b231
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and contains a direct link to a known malicious redirector infrastructure. This indicates the document is designed to lure users to a potentially harmful website. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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%BF%D0%B4%D0%B4+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762476_78m05__shema_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762504_sergey__maslennikov__zhizn_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762365_digitech__rp55_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053e31.bin
07a9d804069faa2d47841ae9b371a4da9e9b32626f79006da2f0a023afb59f4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53E31 9264 bytes
font_01_sfnt_off00055780.bin
a799d93b649fc0fc1baf9e6a6c747b26e41f9c4bc18414722f603748617b1036		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55780 14960 bytes

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