Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcd4525669f6fd81…

MALICIOUS

PDF

186.7 KB Created: 2015-08-08 09:46:13 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c3cf83974cb960b4632a3d67d8d80be1 SHA-1: 6f76478b98252d54ed1513785e461c232b37a263 SHA-256: bcd4525669f6fd8121583cbd3dca220ab62db62d3c009f04b8e4ae59f6679430
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. This indicates the document is designed to lure users to a malicious website. The presence of the malicious link is the primary indicator of compromise.

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=sagemcom+fst+2804+v5+%D0%BF%D1%80%D0%BE%D1%88%D0%B8%D0%B2%D0%BA%D0%B0+%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://img1.liveinternet.ru/images/attach/c/6//4383/4383826_skachat_admin_sobeyt_dlya_samp.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384114_otvetuy_k_uz_testam_10_klas.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384060_skachat_verku_serdyuchku_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a94b.bin
a5afae57ed00a230e1630a643d24465b74e718cbb72bb3a13519a5ef0be02335		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A94B 7980 bytes
font_00_sfnt_off00023e8d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E8D 3556 bytes
font_01_sfnt_off00024c10.bin
17fc688199cb1f6169375b145e8fbf24a40402347a4a962b24bb31bac6759eff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C10 15072 bytes
font_02_sfnt_off00027aeb.bin
a301d76c44a6e32de1a11054bfaeb15eee2d29bd06b40303da6ed433e8c1a480		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27AEB 15672 bytes
font_04_sfnt_off0002c102.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C102 6084 bytes
font_05_sfnt_off0002d097.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D097 3752 bytes

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