Malicious PDF — malware analysis report

Static analysis result for SHA-256 a80231e861cea7e7…

MALICIOUS

PDF

186.3 KB Created: 2015-07-25 11:55:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e306e3dafe3819ae7ddba1de7da8ff51 SHA-1: 265cb65883e3e40d01296f71bc0780d9c00cf35e SHA-256: a80231e861cea7e7d1f6121f5a04ef42a4ea548933d8cf459f9fa975cacc7b56
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 alert for a redirector link to botcraftman.ru. The ML classifier also assigned a high probability of maliciousness. The embedded URL is the primary indicator of malicious intent, suggesting the document is designed to lure users to a compromised or malicious site. No scripts were extracted, and the document body was not human-readable text.

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-8927560-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8927560-0
  • 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%9F%D0%B5%D1%80%D0%B5%D0%B4%D0%B0%D1%87%D0%B0+%D1%81%D1%83%D0%B4%D0%BD%D1%8B%D0%B9+%D0%B4%D0%B5%D0%BD%D1%8C+%D0%BD%D0%BE%D0%B2%D0%BE%D0%BA%D1%83%D0%B7%D0%BD%D0%B5%D1%86%D0%BA+%D1%81%D0%BC%D0%BE%D1%82%D1%80%D0%B5%D1%82%D1%8C+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193039_kod_aktivacii_avast_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192835_vorovayki_skachat_torrent_vse_albomuy.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197423_obschestvoznanie_skachat_petrunin.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024652.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24652 3556 bytes
font_01_sfnt_off000253d5.bin
9296cd7677d555bd645a7d5ad3a0e5935248d6f5604ce4813758e5f27111912e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x253D5 14184 bytes
font_02_sfnt_off000280a7.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280A7 14468 bytes
font_03_sfnt_off0002ab59.bin
7d88d12d3ca71eefd06b68e5316ae13b2f7c5232babf1944cfeacbbdc2110218		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB59 6944 bytes
font_04_sfnt_off0002bf80.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF80 6084 bytes
font_05_sfnt_off0002cf15.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF15 3752 bytes

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