Malicious PDF — malware analysis report

Static analysis result for SHA-256 613c31af4434de28…

MALICIOUS

PDF

186.1 KB Created: 2015-08-08 13:16:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c0ca36271e8c9be96173fc451b68ed74 SHA-1: 5636b45c849e2c636a9c2b6c91168dd86bb06599 SHA-256: 613c31af4434de2839466648ae6fc3ea1129838018aa5ce8adffb8a6c7928b60
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a redirector link to known malicious infrastructure. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a lure for further malicious activity. No scripts were extracted, but the presence of a malicious redirector suggests an attempt to deliver a payload or phish the user.

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%BA%D1%80%D0%BE%D0%B2%D0%BE%D1%81%D1%82%D0%BE%D0%BA+%D1%81%D1%82%D1%83%D0%B4%D0%B5%D0%BD%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4390/4390106_chiploader_197_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4392/4392333_akt_na_brak_tovara_blank_po_forme_t46.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386447_bitva_geroev_kristall_vlasti_skachat_torrent.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_off00024632.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24632 3556 bytes
font_01_sfnt_off000253b5.bin
11f9b4857c85b669ff8570ddfa84290acb5f8b6f48545a8a709119c2829db862		 pdf-font-stream PDF embedded font (sfnt) at offset 0x253B5 14948 bytes
font_02_sfnt_off000281b6.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281B6 14468 bytes
font_03_sfnt_off0002ac68.bin
9449587642793c451a232749558b29855fef98d1207467ac9137c93b881ca66e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC68 6440 bytes
font_04_sfnt_off0002bec5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEC5 6084 bytes
font_05_sfnt_off0002ce5a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE5A 3752 bytes

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