Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cd86ca7387098eb…

MALICIOUS

PDF

184.1 KB Created: 2015-08-08 09:50:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 084398c75d5b8cf5fe649e0d761df38c SHA-1: cc521110d7131bdb35e5b8a3e239a552c149c731 SHA-256: 3cd86ca7387098eb89820d38f8c3ba219f6fe0a302e854414bf04f9aecc5e752
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, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a gateway to a phishing or malware distribution site. No scripts were extracted, but the presence of the malicious link is sufficient to infer a phishing or redirection attack pattern.

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+%D1%81%D0%BA%D1%80%D0%B8%D0%BF%D1%82%D1%8B+%D0%B4%D0%BB%D1%8F+%D0%BC%D1%82%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383996_dota_2_skachat_torrent_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383862_kubanovedenie_zaycev_aa.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384481_olimpiaduy_po_nemeckomu_yazuyku_20152015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e53.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E53 3556 bytes
font_01_sfnt_off00024bd6.bin
bbe286962ce8388c3c63d4141f3e4c15666ff34fb788a096b3862a551a26dcb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BD6 14816 bytes
font_02_sfnt_off00027995.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27995 14468 bytes
font_03_sfnt_off0002a447.bin
8b48469acd90c05bbb345dfd23833af2699d00cf9310082af07f5c9070a5fcd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A447 6488 bytes
font_04_sfnt_off0002b6be.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B6BE 6084 bytes
font_05_sfnt_off0002c653.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C653 3752 bytes

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