Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1e763d5670f214…

MALICIOUS

PDF

186.2 KB Created: 2015-08-04 02:52:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 20c84d211df4a8d3abbc1a24adf1ada1 SHA-1: 116b136ac5a5dc456cec56130937e5d991fb520a SHA-256: dc1e763d5670f2147c3ad2358fad45196c89f20f342291b9d8864678fcf798a8
92 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, specifically for containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL `http://botcraftman.ru/...` is the primary indicator of compromise, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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%D1%85%D0%B5%D0%BC%D0%B0+%D0%BC%D0%B5%D1%82%D1%80%D0%BE+%D1%81%D0%B0%D0%BD%D0%BA%D1%82-%D0%BF%D0%B5%D1%82%D0%B5%D1%80%D0%B1%D1%83%D1%80%D0%B3+%D0%BC%D0%BE%D1%81%D0%BA%D0%BE%D0%B2%D1%81%D0%BA%D0%B8%D0%B9+%D0%B2%D0%BE%D0%BA%D0%B7%D0%B0%D0%BB&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4201/4201732_gruppa_knyaz_novuyy_albom_2015_goda_slushat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4247/4247662_fb2.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4222/4222291_koduy_na_gta_san_andreas_samuye_novuye_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024481.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24481 3556 bytes
font_01_sfnt_off00025204.bin
f6264d095f1eff3429fc028c1e1a8239823a9258af8e5d9c4e695705d47c2aeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25204 14616 bytes
font_02_sfnt_off00027fa2.bin
07dca4bc51627024b3d78b28a97e6bf32b7e511bad25cd7aae76969b39ce2acd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FA2 14532 bytes
font_03_sfnt_off0002aa95.bin
f50471591fc3e8798fa25ba4b0af99e81724a334d16a43265cf3930d832ae14a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA95 6988 bytes
font_04_sfnt_off0002bed4.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BED4 6084 bytes
font_05_sfnt_off0002ce69.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE69 3752 bytes

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