Malicious PDF — malware analysis report

Static analysis result for SHA-256 35be411909b32763…

MALICIOUS

PDF

186.2 KB Created: 2015-08-09 15:03:11 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2494a1a7edfa65ebe0ef908e0f7c00e1 SHA-1: 55ee9bbc7f22a027ba41ca55eba07bf6021f7c35 SHA-256: 35be411909b32763922baf7c6ea934d122a57f118b5e1dfc315b576fdc8b0ab7
92 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery. 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%87%D0%B8%D1%82+%D0%BD%D0%B0+%D0%B4%D0%B5%D0%BD%D1%8C%D0%B3%D0%B8+%D0%B2+%D0%BA%D0%BE%D0%BF%D0%B0%D1%82%D0%B5%D0%BB%D1%8C+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4405/4405474_bagi_na_igru_flirt_siti.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4417/4417004_bot_dlya_twitter.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4407/4407838_point_blank_chituy_na_dengi.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024695.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24695 3556 bytes
font_01_sfnt_off00025418.bin
f04808e0419b78f0b71d5100c3c2754617e4c8b12ff30f50dd4af88ff95f5f6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25418 14280 bytes
font_02_sfnt_off0002812d.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2812D 14468 bytes
font_03_sfnt_off0002abdf.bin
0f483a163f12bf89a3c3a28e8aa6d28a407605e1f94a5d29dd5f637d17c8e89c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABDF 6744 bytes
font_04_sfnt_off0002bf2f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF2F 6084 bytes
font_05_sfnt_off0002cec4.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEC4 3752 bytes

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