Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ba57d61885ad706…

MALICIOUS

PDF

187.1 KB Created: 2015-07-24 04:33:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ed95d72524c422b41a13f6990511a172 SHA-1: 0ab735a19026564f687078e0b93a864d14b889d6 SHA-256: 0ba57d61885ad70629182e98a71be28968970ba3d4fece46488e7116f3e91ad3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by multiple heuristics, including ClamAV and an ML classifier. A critical heuristic identified a link to a known malicious redirector infrastructure at http://botcraftman.ru/. This suggests the document is designed to lure users to a malicious website, likely for phishing or further malware delivery. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8785593-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8785593-0
  • 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%BD%D0%B0%D0%BB%D0%BE%D0%B3%D0%BE%D0%B2%D0%B0%D1%8F+%D0%B4%D0%B5%D0%BA%D0%BB%D0%B0%D1%80%D0%B0%D1%86%D0%B8%D1%8F+%D0%B4%D0%BB%D1%8F+%D0%B8%D0%BF+%D1%83%D0%BF%D1%80%D0%BE%D1%89%D0%B5%D0%BD%D0%BA%D0%B0+2013+%D0%B1%D0%BB%D0%B0%D0%BD%D0%BA+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184724_divinity_original_sin_skachat_torrent_russkaya_ozvuchka.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187686_syuzhetnuye_stihi_3_4_klass.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184755_akt_na_spisanie_medikamentov_blank.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_off00024690.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24690 3556 bytes
font_01_sfnt_off00025413.bin
5916ba75099a0688ca57880bfc85ab5a18959560d06ce784356559ce5c2015c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25413 15048 bytes
font_02_sfnt_off0002826f.bin
20d3b6626e7c7615720439939e3b62f8f40db7468b23ba3d146b025cce0c985e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2826F 14468 bytes
font_03_sfnt_off0002ad1c.bin
cf04fc41d647845881aa80eafceac1ea26c09e0adaefe68f2f223b6f5ff563e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD1C 7368 bytes
font_04_sfnt_off0002c2ad.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2AD 6084 bytes
font_05_sfnt_off0002d242.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D242 3752 bytes

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