Malicious PDF — malware analysis report

Static analysis result for SHA-256 b36ce2cc13cba5e8…

MALICIOUS

PDF

186.1 KB Created: 2015-07-24 01:01:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: fc8c3eea60babe6895ff58584e143282 SHA-1: 57fb3c4eae996c64e565f1f090de1db605f8320a SHA-256: b36ce2cc13cba5e8c09f375f94bf93db36d5d33afb73f49f065778c69641f16c
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics as malicious, including a critical alert for a redirector link to botcraftman.ru. The ML classifier also assigned a high probability of maliciousness. The ClamAV detection name 'Pdf.Dropper.Agent-8789079-0' suggests the PDF acts as a dropper for further malicious content. The embedded URL is the primary indicator of compromise, likely leading to a malicious download or exploit.

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-8789079-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8789079-0
  • 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%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%B5+%D0%BF%D0%BE%D1%80%D0%BD%D0%BE+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%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://img1.liveinternet.ru/images/attach/c/5//4185/4185457_skachat_gta_san_andreas_bez_torrenta.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185228_yandeks_bar_dlya_firefox_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185369_street_legal_racing_redline_russian_edition_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024778.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24778 3556 bytes
font_01_sfnt_off000254fb.bin
d84153066b6e243ffb4f6528cdb466ab20766f60df93b76ca7cefffa5ecc3d03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x254FB 14464 bytes
font_02_sfnt_off000281a1.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281A1 14468 bytes
font_03_sfnt_off0002ac53.bin
4b69baed25e08def7e22006b839e6085216c979bb49c459b040974a33e1ae4cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC53 6396 bytes
font_04_sfnt_off0002be84.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE84 6084 bytes
font_05_sfnt_off0002ce19.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE19 3752 bytes

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