Malicious PDF — malware analysis report

Static analysis result for SHA-256 acd5ac462caac9d5…

MALICIOUS

PDF

187.1 KB Created: 2015-07-25 03:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 00e727997b7b355f7a6e687004848090 SHA-1: bab94a616c66b0136ec506de988becd5fc7e8b7d SHA-256: acd5ac462caac9d521d90eab7617114b47cf1c3e90f1121c2e8f6303d26c5c55
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. No scripts were extracted, but the presence of a malicious link suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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%AE%D0%B1%D0%B8%D0%BB%D0%B5%D0%B9+55+%D0%BB%D0%B5%D1%82+%D0%B6%D0%B5%D0%BD%D1%89%D0%B8%D0%BD%D0%B5+%D0%BF%D1%80%D0%B8%D0%BA%D0%BE%D0%BB%D1%8C%D0%BD%D1%8B%D0%B9+%D1%81%D1%86%D0%B5%D0%BD%D0%B0%D1%80%D0%B8%D0%B9&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185528_cosmopolitan_velikolepnaya_vneshnost_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187761_skachat_igru_cherez_torrent_the_amazing_spiderman.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196186_koduy_kosgu_v_2015_godu_dlya_byudzhetnuyh_uchrezhdeniy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024549.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24549 3556 bytes
font_01_sfnt_off000252cc.bin
dfcb496c3adb952f91d5c2bfb30793a04495579ec1b5e2abae2981dffd8bb300		 pdf-font-stream PDF embedded font (sfnt) at offset 0x252CC 15372 bytes
font_02_sfnt_off000282a2.bin
111d3bf00e8ec5717cd1ce47e6fe2c4812be4a5ed9ba61a690816a10942fb47a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x282A2 14836 bytes
font_03_sfnt_off0002ae6d.bin
6f5f4f2991f316b80526f2039eefea2f0750c64a8d25eb58c2fb671acec8da7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE6D 7064 bytes
font_04_sfnt_off0002c2bc.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2BC 6084 bytes
font_05_sfnt_off0002d251.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D251 3752 bytes

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