Malicious PDF — malware analysis report

Static analysis result for SHA-256 53f6254aa214fa17…

MALICIOUS

PDF

184.0 KB Created: 2015-07-25 05:31:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c442a8a61e973028c3671642c05cb974 SHA-1: 90516e298c302b21debe57a84d221a3a1231ec2e SHA-256: 53f6254aa214fa175379f7813c25dea81d5d3728544f6a6d8c4ecf4797e6a9f8
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, but the presence of the malicious link strongly suggests a phishing or malware delivery attempt.

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%9C%D0%B0%D0%BB%D1%8C%D1%87%D0%B8%D0%BA%D0%B8+%D0%B2+%D0%BF%D0%BB%D0%B0%D0%B2%D0%BA%D0%B0%D1%85+11+%D0%BB%D0%B5%D1%82+%D1%84%D0%BE%D1%82%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188051_skachat_skype_mobilnaya_versiya.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195369_skachat_aim_dlya_warface_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185241_ccleaner_skachat_besplatno_russkaya_versiya_dlya_windows_7.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023d09.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D09 3556 bytes
font_01_sfnt_off00024a8c.bin
ba5e5ab2ea806c5e061a204dc963e94ee364f19d30a9f3a1c48fb8bbd83816c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A8C 14844 bytes
font_02_sfnt_off000278cc.bin
a6626c0bd3595dc776735a93968cf26fa9368d0e017313712711ccf7ec06347e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x278CC 14532 bytes
font_03_sfnt_off0002a3bc.bin
4243ec490b28122a3383dd5b3bc5266ad61ccb229f22379a118a01476adf7cf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A3BC 6460 bytes
font_04_sfnt_off0002b628.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B628 6084 bytes
font_05_sfnt_off0002c5bd.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5BD 3752 bytes

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