Malicious PDF — malware analysis report

Static analysis result for SHA-256 08551560c13b4a8e…

MALICIOUS

PDF

186.8 KB Created: 2015-07-27 08:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 634600863855576199411074b2844593 SHA-1: 326ac2e920bc03438f336c75007410d167955415 SHA-256: 08551560c13b4a8ebf4674f74596f6d5a77853a9c7419e2ca246e912c4e7f8fd
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a malicious redirector link. The ML classifier also strongly flagged this PDF as malicious. The embedded URL points to botcraftman.ru, which is known for malicious redirection, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of a malicious link is sufficient to classify the attack pattern.

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%93%D0%B4%D0%B7+%D0%BF%D0%BE+%D0%B1%D0%B8%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D0%B8+8+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D1%80%D0%B0%D0%B1%D0%BE%D1%87%D0%B0%D1%8F+%D1%82%D0%B5%D1%82%D1%80%D0%B0%D0%B4%D1%8C+%D0%BA%D0%BE%D0%BB%D0%B5%D1%81%D0%BE%D0%B2+%D0%BC%D0%B0%D1%88+%D0%B1%D0%B5%D0%BB%D1%8F%D0%B5%D0%B2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4200/4200625_ramki_dlya_pozdravitelnogo_adresa_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4212/4212206_batman_arkham_asylum_klyuch_produkta.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190001_i_exam_otvetuy_yelektrotehnika.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024656.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24656 3556 bytes
font_01_sfnt_off000253d9.bin
dabc8184833967611167caa0de45d2b3d90d0f089d792a499d8748a7414d6ffe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x253D9 14900 bytes
font_02_sfnt_off00028160.bin
cd505cbeb8ddc6cecaee4fa25e9106dffed8d880205b67215dc9afef50a13bcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28160 14520 bytes
font_03_sfnt_off0002ac31.bin
d4f6900b12c5a75816898df83d3670c40ed3b7e9ae91412fdac1b40988623d08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC31 7240 bytes
font_04_sfnt_off0002c147.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C147 6084 bytes
font_05_sfnt_off0002d0dc.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0DC 3752 bytes

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