Malicious PDF — malware analysis report

Static analysis result for SHA-256 70fd76a48769404d…

MALICIOUS

PDF

184.2 KB Created: 2015-08-08 14:15:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 5196c0e578623c64fa6bb1abea3e2f3f SHA-1: bfdb324ef41a232d905bdacd8fd88c20faebcc32 SHA-256: 70fd76a48769404dcc61125cff1608210b43b35578800d9979cb6c295a85d08f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 lure for further malicious activity such as phishing or malware delivery. No scripts were extracted, but the presence of the malicious link is sufficient evidence.

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%8F%D0%B7%D1%8B%D0%BA+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D1%8F+lua&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4211/4211989_skachat_kontroller_universalnoy_posledovatelnoy_shinuy_usb.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4392/4392114_muzuyka_albomuy_skachat_besplatno_na_fleshku.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4390/4390640_sozdaem_prilozhenie_dlya_android.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023ec1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23EC1 3556 bytes
font_01_sfnt_off00024c44.bin
5c167b60e4956cbe86ea5b44d2ea08dfa5b6b7fc4037b7e0145ade9ea8a1ff9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C44 14224 bytes
font_02_sfnt_off00027881.bin
8254890309e36524e842a1f3213247917736985b769a60f4da7df737c08519a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27881 14604 bytes
font_03_sfnt_off0002a39e.bin
8809f013503d2f7ca80cd5e5bb59f5a8048937b039c240ab60b4add823522d18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A39E 6792 bytes
font_04_sfnt_off0002b71a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B71A 6084 bytes
font_05_sfnt_off0002c6af.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6AF 3752 bytes

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