Malicious PDF — malware analysis report

Static analysis result for SHA-256 1287bedfee9a78ba…

MALICIOUS

PDF

186.8 KB Created: 2015-07-25 02:49:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 8cb7b22d6dab4b94f4e63a74ef143a59 SHA-1: 5c3d9658b746a3872e52d5ff94caad5867b17bd0 SHA-256: 1287bedfee9a78ba71e8f996c65887eeb6d2c5e83b50640d0b930adb1a9d149d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is associated with malicious activity. While no scripts were extracted, the presence of this malicious link suggests an attempt to redirect the user to a harmful site, likely for malware distribution or phishing. The ML classifier also strongly indicated maliciousness.

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%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+mathcad+14+rus+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B4%D0%BB%D1%8F+windows+7+64+bit&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191787_officesuite_pro_7_dlya_android_kod_aktivacii.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191523_skachat_drugvokrug_na_telefon.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198394_puye_rb_skachat.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a9a0.bin
7350b1519781fddf54f1e44ea4eeb2f13e6588560ba0f742be7a2a7ac1ee06ca		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A9A0 7984 bytes
font_00_sfnt_off000240f9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240F9 3556 bytes
font_01_sfnt_off00024e7c.bin
24d36dd74b3fb68b082edab2157503880bf7ca237ca8d60da0153acbbf89f200		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E7C 15292 bytes
font_02_sfnt_off00027d25.bin
fabb68fb2420247812a26bcbb979f8d5757f37b3259b8d1349b3faef4455e6ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D25 15096 bytes
font_04_sfnt_off0002c173.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C173 6084 bytes
font_05_sfnt_off0002d108.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D108 3752 bytes

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