Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaaf26654b180f90…

MALICIOUS

PDF

185.5 KB Created: 2015-08-05 13:52:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: caf50b6ddbb5a6bc5eecdb6af8cad115 SHA-1: 94bf1482ad58b49d968818756b535a03ed514f82 SHA-256: aaaf26654b180f90ff5440c44c3ab05b0012d935e2bb56dbe3ed8a5c558492a6
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link to 'http://botcraftman.ru/'. This strongly suggests the document is designed to lure users to a malicious site, likely for phishing or malware distribution. The ML classifier also flagged the PDF with high confidence. No scripts were extracted from this sample.

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%91%D0%B0%D0%B7%D1%8B+%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85+access+%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D1%80+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304663_kontrolnaya_rabota_po_matematike_2_klass_godovaya.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304661_programma_dlya_zahvata_video_s_veb_kameruy.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304712_asus_a53s_drayvera_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a76d.bin
a7523f36bd3be1da4b457581dd22e10ec9022172a628f1a92aa02f58b298a5fc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A76D 7112 bytes
font_00_sfnt_off000240fe.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240FE 3556 bytes
font_01_sfnt_off00024e81.bin
ad4b3df1bd0d4ee6d7071506a8b8f5f283e25cecb060c87142883f3b70db7f94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E81 14820 bytes
font_02_sfnt_off00027c80.bin
7b18f7c6b0abd4d49d098e4a219883c5698b79333a0a0df203bb8f4c064b8354		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C80 14532 bytes
font_04_sfnt_off0002bc0d.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC0D 6084 bytes
font_05_sfnt_off0002cba2.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBA2 3752 bytes

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