Malicious PDF — malware analysis report

Static analysis result for SHA-256 574ff7aa5c248243…

MALICIOUS

PDF

187.7 KB Created: 2015-07-29 01:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 17b2b7af39f6b549ef5b6d8ada9f358a SHA-1: 8d06b090a990833b4db0135e28fae39d03559117 SHA-256: 574ff7aa5c248243a6c1606b3289ac97337606f7fc683d85fbeca79b0c606e44
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 likely part of a phishing or malware distribution chain. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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%BA%D0%B0%D0%B7%D0%B0%D0%BA%D0%B8+2+%D0%B1%D0%B8%D1%82%D0%B2%D0%B0+%D0%B7%D0%B0+%D0%B5%D0%B2%D1%80%D0%BE%D0%BF%D1%83+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B4%D0%BB%D1%8F+windows+8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4232/4232915_ethernet_kontroller_drayver_dlya_windows_7.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4213/4213511_skachat_sborku_minecraft_1_5_2_s_modami.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4220/4220525_uzbek_kizlarni_ami.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002adb9.bin
fb401118021564834694103490fe6c3d8d7fe0c5ce61acef2d6a34f127f4a668		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2ADB9 7928 bytes
font_00_sfnt_off000246f2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246F2 3556 bytes
font_01_sfnt_off00025475.bin
c43c00d0f11db81f5718ed9de5e6bcbcad1294c607d4bbdf62dd9ae352ee4b3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25475 15032 bytes
font_02_sfnt_off000282cd.bin
560fa9203b4514228bb21017975ef24958d7c4c7df545ae1e427bd8f070c4383		 pdf-font-stream PDF embedded font (sfnt) at offset 0x282CD 14536 bytes
font_04_sfnt_off0002c531.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C531 6084 bytes
font_05_sfnt_off0002d4c6.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D4C6 3752 bytes

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