Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae40f0cc10c5ce5c…

MALICIOUS

PDF

185.7 KB Created: 2015-08-08 10:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 21b75b5820ae49dd867d932add7a9aec SHA-1: 791f2e873a87905b6a334f97cf9370e4b0dfe255 SHA-256: ae40f0cc10c5ce5c9b72a7c7b4b0d2f02f0ba496ba27d591578bc924c781d729
92 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This heuristic, combined with a high ML classifier score, strongly indicates malicious intent. The document body is largely unreadable binary data, but the presence of the malicious URL is sufficient to determine the attack pattern. 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%B1%D0%B0%D1%81%D1%82%D0%B0+%D0%BD%D0%BE%D0%B2%D1%8B%D0%B9+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC+2015+%D1%81%D0%BB%D1%83%D1%88%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385634_skachat_torrent_ghjuhfvve.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386069_igra_blokada_igrat_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384608_tabu_3_smotret_onlayn_na_russkom_yazuyke.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241c9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241C9 3556 bytes
font_01_sfnt_off00024f4c.bin
d496191a34dbebcd8b46df16421e1c9db016fbccd3d7cf63e4d9c45a315250d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F4C 14644 bytes
font_02_sfnt_off00027d13.bin
761860436983d889f0ba9666724151926fe8ef141cd8980edc9d46fcc31c5074		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D13 14700 bytes
font_03_sfnt_off0002a869.bin
96410d80f22e7c39836510c0d6c5c6d7ce72b3afefc974568c6f3e4fa0c163cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A869 7052 bytes
font_04_sfnt_off0002bcec.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCEC 6084 bytes
font_05_sfnt_off0002cc81.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC81 3752 bytes

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