Malicious PDF — malware analysis report

Static analysis result for SHA-256 edbce2ac6bbfe69c…

MALICIOUS

PDF

186.6 KB Created: 2015-07-24 03:46:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e4fa67aa1525932b2a2f2c3496f20d30 SHA-1: 4f2bda1675148d80ca93d90c75738e10c5bf5fc0 SHA-256: edbce2ac6bbfe69cb37e0eb0d9f14646d43911563e9e81b9f0eeb5b40b07d541
92 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 embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent. While no scripts were extracted, the presence of this malicious link suggests the document is designed to lure users to a harmful site, likely for phishing or malware distribution. 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+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE+%D0%BF%D1%80%D0%BE%D0%B8%D0%B3%D1%80%D1%8B%D0%B2%D0%B0%D1%82%D0%B5%D0%BB%D1%8C+%D0%B4%D0%BB%D1%8F+windows+7&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183178_kuryatnik_proekt.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186827_skachat_adobe_flash_player_dlya_windows_phone.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185155_microsoft_office_publisher_2007_skachat_besplatno_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002ab61.bin
a98f3402f1546cb8ce8f8329bc3d1dc88425725863c71b5735bbcea90e2b739b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AB61 7308 bytes
font_00_sfnt_off00024477.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24477 3556 bytes
font_01_sfnt_off000251fa.bin
b7ca8fd09c3278e9bb5d905d26a5ee9a50667c570240767e1a7a3788d4eefa62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251FA 15024 bytes
font_02_sfnt_off00028041.bin
9d90e18ee50434addfa8c210065a1461feda93b1cad23cebf91f15991c29ade2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28041 14584 bytes
font_04_sfnt_off0002c0c1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0C1 6084 bytes
font_05_sfnt_off0002d056.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D056 3752 bytes

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