Malicious PDF — malware analysis report

Static analysis result for SHA-256 5141740bc4541943…

MALICIOUS

PDF

186.5 KB Created: 2015-08-08 10:03:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c0c1a8b656e13f9ab979ea2a79cf3ba3 SHA-1: 1c11698fc6643ac96a51c92c8dc20a8702ba8017 SHA-256: 5141740bc45419436a03c7bf02f94c5468b0fef035f6da1c202e3ad8051e5fcf
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 containing a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to 'botcraftman.ru', which is likely used to redirect the user to a malicious site. No scripts were extracted from this sample.

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81%D0%BA%D0%B8%D0%BD%D1%8B+%D0%B4%D0%B5%D0%B2%D1%83%D1%88%D0%B5%D0%BA+%D0%B4%D0%BB%D1%8F+minecraft+64x32&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384774_hp_deskjet_f380_skachat_drayver_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384480_semyanin_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384428_korkonosenko_osnovuy_zhurnalistiki_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000240b0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240B0 3556 bytes
font_01_sfnt_off00024e33.bin
86b77ce4c066e68fe0764b6345c87d56f84b532b0e49bd68cb522a8f60770fd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E33 14936 bytes
font_02_sfnt_off00027c4b.bin
20814105d46910570509532f500ea93c724be408563d4788a9223c93ef8ee9ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C4B 14964 bytes
font_03_sfnt_off0002a87b.bin
aaeae5668ee9d21a31e4535cb51e98360259f3bbe979607e014f3e33b97fb132		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A87B 7972 bytes
font_04_sfnt_off0002c028.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C028 6084 bytes
font_05_sfnt_off0002cfbd.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFBD 3752 bytes

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