Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1caabe5800462fd…

MALICIOUS

PDF

186.8 KB Created: 2015-07-25 05:51:46 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bb8f6c7e31d098970bd5c8e508167f1d SHA-1: 1aecfedd3baca02904bb628a198d1137a6792ce1 SHA-256: f1caabe5800462fdfbeed1aabd1ca654c4a0be7ba892f837e909455c5431bbf4
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 flagged this PDF with high confidence. No scripts were extracted from this sample, and the document body was not sufficiently readable to determine a specific lure.

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=sorry+but+this+version+of+gta_saexe+is+not+supported+%D1%87%D1%82%D0%BE+%D0%B4%D0%B5%D0%BB%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197583_teoriya_lzhi_4_sezon_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186614_skachat_lenovo_launcher.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192790_gta_4_skachat_torrent_russkaya_ozvuchka.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002aa26.bin
52dbc3f88266cfff66736d5d8790c3514c9232e4dc80ffec6d08690f252900c3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AA26 7772 bytes
font_00_sfnt_off00024051.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24051 3556 bytes
font_01_sfnt_off00024dd4.bin
0216bc164c632ced1e33c498961c1e7ee6e78f5ca3edcda9e73480db9be975f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DD4 15304 bytes
font_02_sfnt_off00027cf8.bin
c92584ed05abeb04a229451ecf18f7f65904dbf3d39f3e3bc95d5f9af467ea9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CF8 15272 bytes
font_04_sfnt_off0002c135.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C135 6084 bytes
font_05_sfnt_off0002d0ca.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0CA 3752 bytes

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