Malicious PDF — malware analysis report

Static analysis result for SHA-256 b99c10b8822658dd…

MALICIOUS

PDF

293.4 KB Created: 2015-08-24 05:05:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2026-06-05
MD5: 8cdbcab817bed4c29160ea4306a745ff SHA-1: fdd915e18fead26b2f86bc6bf2a41c396ef4fa31 SHA-256: b99c10b8822658dda7d947f80e7c15d54d1985fb5136f608e8e434c72ecfb7b4
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL `http://botcraftman.ru/?lip&keyword=evoscan+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8` is identified as a known malicious redirector. While no scripts were explicitly extracted, the nature of the PDF and the redirector link suggest an attempt to lure the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6955

Heuristics 3

  • 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=evoscan+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4699/4699282_lego__zvezdnuye__voynuy_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4698/4698916_partition__magic__dlya_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693901_deystvuyuschie__klyuchi__dlya_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00044d70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44D70 8144 bytes
SHA-256: cc55781d24c0b9c066624f82199e314be4426208416474febc8b5eb44690133c
font_01_sfnt_off000463a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x463A6 16696 bytes
SHA-256: a146269f444274f1658f455eaeb74ae0d337aa55eb6eb1d073a54b395b43eec6

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