Malicious PDF — malware analysis report

Static analysis result for SHA-256 06542018e988a127…

MALICIOUS

PDF

352.4 KB Created: 2015-08-21 12:52:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 4c13117479c36149f479abcbe0323c90 SHA-1: 3d85cffe1b06124dd99d373ada6dc33d9b203774 SHA-256: 06542018e988a127b24e8b6e60ab16999907ab349a12559660b5175d6f01a0a1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file 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 scheme. No scripts were extracted, but the presence of a malicious redirector strongly suggests an intent to deliver a secondary payload or phish credentials.

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%BF%D0%B8%D0%BD+%D0%BA%D0%BE%D0%B4%D1%8B+%D0%BD%D0%B0+%D0%B2%D0%B0%D1%80%D1%84%D0%B5%D0%B9%D1%81+%D0%B0%D0%B2%D0%B3%D1%83%D1%81%D1%82+2015&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4657/4657822_coreldraw_10_skachat_besplatno_na_russkom.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4655/4655942_situacionnuye_zadachi_po_nevrologii_s_otvetami.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4655/4655492_diablo_1_skachat_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000535ed.bin
7de56c01a8caf1fc220c7a5a26f3e519e0bf6605d3de2b7e18304d00d3fa0b64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x535ED 10376 bytes
font_01_sfnt_off00055381.bin
c14f272d6b2f5bdc6ef6cd3cb51ee91d6603945b1ab5245a152f30fcf0094fcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55381 15204 bytes

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