Malicious PDF — malware analysis report

Static analysis result for SHA-256 177a2051984650e6…

MALICIOUS

PDF

186.5 KB Created: 2015-08-05 17:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0f8b338545d40d541f93e6cacbf7e71f SHA-1: bb5a28f4968e02f59222924807e6ee3bf236c84c SHA-256: 177a2051984650e6ae78fca00bf7e2f44622b95986663903385eb50d35dfc965
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file was flagged by a malicious redirector heuristic and an ML classifier, indicating malicious intent. It contains an embedded URL pointing to a known malicious domain, likely serving as a lure for users to download further malware or visit a phishing page. No scripts were extracted, and the document body was truncated, limiting further analysis of the 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81%D0%BA%D0%B0%D0%B9%D0%BF+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%81+%D0%BE%D1%84%D0%B8%D1%86%D0%B8%D0%B0%D0%BB%D1%8C%D0%BD%D0%BE%D0%B3%D0%BE+%D1%81%D0%B0%D0%B9%D1%82%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305291_opera_mini_7_skachat_besplatno_dlya_samsung.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305853_klon_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304692_skachat_besplatno_film_na_mobilnuyy_telefon.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002461c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2461C 3556 bytes
font_01_sfnt_off0002539f.bin
dbe9fc3220bf8e743bf7cf8c2ecf24bb420f48e66cc0a503245281d0ad0c24ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2539F 15144 bytes
font_02_sfnt_off000281ff.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281FF 14468 bytes
font_03_sfnt_off0002acb1.bin
9febe68d75628e91a0c3740c715d17d43e5946345c927b5fc8aada996300544b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACB1 6752 bytes
font_04_sfnt_off0002c006.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C006 6084 bytes
font_05_sfnt_off0002cf9b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF9B 3752 bytes

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