Malicious PDF — malware analysis report

Static analysis result for SHA-256 081694d610b24aed…

MALICIOUS

PDF

360.4 KB Created: 2015-08-22 09:20:19 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ef9e69ba38467d413c5f988af79e6b71 SHA-1: b0957675835121caa1318ce78d5eb30ce1d874e4 SHA-256: 081694d610b24aed5a31b7fa30a1d8fecd67763ff1341a1ab819abc0b120a4ef
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The embedded URL likely serves as a lure to download further malware or phish for user credentials. No scripts were extracted, but the presence of a malicious redirector strongly suggests a phishing or malware distribution attempt.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%84%D0%B0%D0%BD%D1%84%D0%B8%D0%BA%D0%B8+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674697_skachat_blok_launcher_pro_dlya_maynkraft_080.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674543_vosstanie_kiborgov_2013_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674772_skachat_russkie_kommentatoruy_dlya_pes_2014_cherez_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055a61.bin
f10205f5a202ef172f70d22153d4130ebbb4917c02a60e1755b17fb2a8e8259b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55A61 7900 bytes
font_01_sfnt_off000571a0.bin
7c45ae6de7a41d14269c35429da55990ff754b170b474d7240f1ce85ddecd967		 pdf-font-stream PDF embedded font (sfnt) at offset 0x571A0 15604 bytes

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