Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa1d23e8eeeadcdc…

MALICIOUS

PDF

359.1 KB Created: 2015-08-24 06:15:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 22f4486fa232b4bc478d68fa1af63091 SHA-1: 2517eb3603c8db7c03001786d6ea33e70bc7beee SHA-256: fa1d23e8eeeadcdc826e3008fb6410feb593b25d663fc51b0b4cf2934ba689f4
92 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 link to a known malicious redirector. The embedded URL is likely part of a phishing or malware distribution chain. 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 0.9980

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%BE%D0%BB%D0%B6%D0%BD%D0%BE%D1%81%D1%82%D0%BD%D0%B0%D1%8F+%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F+%D0%BA%D0%BE%D0%BD%D1%82%D1%80%D0%BE%D0%BB%D0%B5%D1%80%D0%B0+%D0%BE%D1%82%D0%BA&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694081_shema__bloka__predohraniteley_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4701/4701818_veterok__8m_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4702/4702053_luykova__konspektuy__zanyatiy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000558b9.bin
bbc7b619d816be6de964e30a6be0b4a30b4d5737fb15145f7670a93a48336713		 pdf-font-stream PDF embedded font (sfnt) at offset 0x558B9 8868 bytes
font_01_sfnt_off0005718c.bin
64f041b6a5531690820ba37725638435405340fc4bf18af3c7fcab400165ce82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5718C 13616 bytes

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