Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e34f537a8e198ce…

MALICIOUS

PDF

364.0 KB Created: 2015-08-20 01:42:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 12575d188fc7e7266889af26ba2fe695 SHA-1: 0cdcd99a436f1750fe856cb3a6ac4b4ca887c25d SHA-256: 6e34f537a8e198ceddb63c3494eff256e1d03e6f06e315f8a9963de18cdbe3be
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings strongly suggest a malicious intent to redirect the user, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%8F%D0%BD%D0%B4%D0%B5%D0%BA%D1%81+%D0%BD%D0%B0%D0%B2%D0%B8%D0%B3%D0%B0%D1%82%D0%BE%D1%80+%D0%B4%D0%BB%D1%8F+windows+ce+60&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4634/4634238_antivirus_dlya_nokia_lumia_720.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4634/4634185_scenariy_koncerta_na_den_rossii_12_iyunya.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4631/4631731_skachat_skype_56.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056552.bin
90003b9001691b5ef1087688da9b56067f81ed11ceeacbdd01c41c29d1d81346		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56552 9372 bytes
font_01_sfnt_off00058009.bin
0160317efde17b7d9e809cfc5f50872c86577f1ebdb7d23b1bcbc633709e3427		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58009 16128 bytes

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