Malicious PDF — malware analysis report

Static analysis result for SHA-256 26b13d9daec4bed3…

MALICIOUS

PDF

186.3 KB Created: 2015-07-23 20:48:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9a7c1a9b17538f189acb67601c7430f3 SHA-1: f18ac4395dc84e1ab974eab4c1e0b5aa39acff81 SHA-256: 26b13d9daec4bed3c62c13640de6eb76abb2c9cbabe477fdfe4ba9cfacaf8585
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 assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirects. No scripts were extracted, and the document body was not parsable.

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=fallout+new+vegas+%D0%B3%D0%B0%D0%B9%D0%B4+%D0%BF%D0%BE+%D0%BF%D1%80%D0%BE%D0%BA%D0%B0%D1%87%D0%BA%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184440_kod_aktivacii_dlya_kaspersky_internet_security_2015_na_90_dney.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184509_disk_avtoshkola_maash_2015_23_versiya_skachat_besplatno_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184650_drug_vokrug_dlya_nokia_n8.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002aa62.bin
19436e95071d53f32b8cb13ea307f0900b797e904ff4db5bf233b2df82fbd17f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AA62 7168 bytes
font_00_sfnt_off0002420e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2420E 3556 bytes
font_01_sfnt_off00024f91.bin
571429865b98f1993729e7eb7c190bba49a70bf19c65515678fc9c45632d35c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F91 15116 bytes
font_02_sfnt_off00027eb4.bin
9b061614ebd7c4dcfd902ee7d0413ee2cc7280c85ca38245715c3fd1686c8285		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27EB4 14752 bytes
font_04_sfnt_off0002bf4d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF4D 6084 bytes
font_05_sfnt_off0002cee2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEE2 3752 bytes

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