Malicious PDF — malware analysis report

Static analysis result for SHA-256 88a5f2ba6ecc78f0…

MALICIOUS

PDF

186.5 KB Created: 2015-08-04 07:02:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 3561d0bb91f54ef152e4673d2dadf8af SHA-1: bc4c5aa623a14371d4c70e09b86a35ea7075ad90 SHA-256: 88a5f2ba6ecc78f0f2f131847131d874bbc31a9e79055fb20ce472d6fc833d8a
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This indicates the document is designed to lure users to a potentially harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was truncated and unreadable.

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=google+sketchup+8+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4235/4235832_smeta_na_videonablyudenie.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4209/4209105_drug_vokrug_sidet_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190055_dyevid_ayk_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a8c4.bin
7a62bc2ebc647fcee369e47dc789c654292897ed00f1203f242e028c60c1aeba		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A8C4 7908 bytes
font_00_sfnt_off00024191.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24191 3556 bytes
font_01_sfnt_off00024f14.bin
7365665939bea32f6da8543f02dc9b469c88c2f1a203824cc8358ddf3df9f891		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F14 14764 bytes
font_02_sfnt_off00027d18.bin
fb8a5d35bf158f68174c849548633bc4341785aef4717ec8f99e41235125edec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D18 14828 bytes
font_04_sfnt_off0002c041.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C041 6084 bytes
font_05_sfnt_off0002cfd6.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFD6 3752 bytes

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