Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc69b423e48c49c9…

MALICIOUS

PDF

186.6 KB Created: 2015-07-27 04:17:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9980e6a0a10b3bc1227093f4ccbda553 SHA-1: 5211eb612e0c50c9b37ad05fb532c99523d99d13 SHA-256: dc69b423e48c49c9e5879b8b1ab0b22a4d52994f36938c718ef1232e66ee65b2
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a malicious redirector link. The link directs to http://botcraftman.ru/, which is known malicious infrastructure. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious link is sufficient to classify the document's 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=%D1%8D%D0%BC%D1%83%D0%BB%D1%8F%D1%82%D0%BE%D1%80+xbox+360+%D0%B4%D0%BB%D1%8F+pc+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%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://img0.liveinternet.ru/images/attach/c/5//4204/4204425_peredacha_sudnuyy_den_novokuzneck_smotret_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4220/4220823_imadeface_onlayn_na_kompyutere.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187385_skachat_barbi_pokaz_mod_2_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024392.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24392 3556 bytes
font_01_sfnt_off00025115.bin
79421f824a7e6649d4993f6489def9a131c53c09a604b8f674f130c2928fadea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25115 14948 bytes
font_02_sfnt_off00027f4b.bin
c47c73dddbf35220ff5019a355860c4ef2ab6e8eff779d2bb6bb4e8f48088a30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F4B 14892 bytes
font_03_sfnt_off0002ab4b.bin
bb80a550d6d0d75aa9eda7ae7a7f0b63c68bb4d964316d3d3fc7bea6971e3b3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB4B 7260 bytes
font_04_sfnt_off0002c093.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C093 6084 bytes
font_05_sfnt_off0002d028.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D028 3752 bytes

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