Malicious PDF — malware analysis report

Static analysis result for SHA-256 550882274eb2bd4f…

MALICIOUS

PDF

186.7 KB Created: 2015-07-24 01:03:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e73ea3a6dadab34b50797929d5a9f9ee SHA-1: d0ad4c3bad3ea97b03fa7861e3d8895d717b0478 SHA-256: 550882274eb2bd4f0b07a320a4a6110f30b10dc4db711b1a5ffe4416be17c385
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical finding for a link to known malicious redirector infrastructure. The embedded URL points to 'botcraftman.ru', which is associated with malicious activity. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious redirector link is sufficient to classify this as a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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-7493187-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7493187-0
  • 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81%D0%B8%D0%BC%D1%81+4+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185580_nastroyka_modema_tenda_w150d_dlya_megalayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186342_denis_maydanov_vse_pesni_skachat_besplatno_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184878_obrazec_blanka_1_po_russkomu_yazuyku_ogye_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024698.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24698 3556 bytes
font_01_sfnt_off0002541b.bin
2c394079ab74cabc45d31d570dabdfb8b74d199f10576eefcd39c1a9f53592c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2541B 15020 bytes
font_02_sfnt_off000282ad.bin
67d53b5d93f9c1a2a208a20cc40158f0d1b9c29be983670d6b7c684d37a817b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x282AD 14468 bytes
font_03_sfnt_off0002ad5d.bin
e68fb9d7575590e5e69948f2c091c7ff13f9708b299dc92be3db41b21d32440b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD5D 6832 bytes
font_04_sfnt_off0002c125.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C125 6084 bytes
font_05_sfnt_off0002d0ba.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0BA 3752 bytes

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