Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d152ee85fddeccb…

MALICIOUS

PDF

186.6 KB Created: 2015-08-08 14:20:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bd05ddf978899a49bc49ca853aebbecb SHA-1: bc35c016713307e803b999c1c3f54f604697146c SHA-256: 1d152ee85fddeccb166d07293a2bb2875747bdac0ccbbe7db11b64ead2e4d30a
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for a malicious redirector attack pattern.

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=%D0%B8%D0%B3%D1%80%D0%B0+%D0%B4%D0%B0%D0%BB%D1%8C%D0%BD%D0%BE%D0%B1%D0%BE%D0%B9%D1%89%D0%B8%D0%BA%D0%B8+2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%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/6//4391/4391626_iskusstvo_grudnogo_vskarmlivaniya_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4391/4391815_krasivuye_slayduy_dlya_prezentacii_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387693_goluye_maloletki_v_kino.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000248a6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248A6 3556 bytes
font_01_sfnt_off00025629.bin
b6b0025f6522eb0af3b8bc5a5613a12b2ed571d33c844d623fd6a59e817430a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25629 13988 bytes
font_02_sfnt_off00028220.bin
dc0603461198d13c70e3cd7ff8c4ff7357f6ec2dbcd26aaa5e465a4d9e353451		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28220 14468 bytes
font_03_sfnt_off0002acd5.bin
f2cac4d3610db98c491cff2c5f8206bab96baf72949e28d661c67fe10b007799		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACD5 6848 bytes
font_04_sfnt_off0002c07e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C07E 6084 bytes
font_05_sfnt_off0002d013.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D013 3752 bytes

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