Malicious PDF — malware analysis report

Static analysis result for SHA-256 bff9fdb5672d78a4…

MALICIOUS

PDF

183.7 KB Created: 2015-07-24 23:46:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 031ef8f53d7d5cc90af02212501832b7 SHA-1: 9231ac97875d3736236c85319d47ba80ae24bafd SHA-256: bff9fdb5672d78a46fbdd53d4526c9648606757407eeb9efa5ef0754479b987b
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The redirector URL is likely used to direct users to a malicious website for phishing or malware distribution. No scripts were extracted, and the document body was heavily 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=3gsw+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%83&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191032_asonika_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184582_skachat_shablonuy_prezentacii_powerpoint.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192531_podarok_s_harakterom_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a1cb.bin
130d18bffb0526d169a7e725f59075d1598e8a3f5e2965449fe97ddaa2a504fa		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A1CB 6676 bytes
font_00_sfnt_off00023b90.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23B90 3556 bytes
font_01_sfnt_off00024913.bin
a50dd325c3c93f7db1d3059e92ee9e6843e4aedb799eae7f959f404b89977849		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24913 14592 bytes
font_02_sfnt_off000276e2.bin
4a2d28a88146e488b5fd080e285975ba0ebb9463aa42755fe16d053ac66b7917		 pdf-font-stream PDF embedded font (sfnt) at offset 0x276E2 14536 bytes
font_04_sfnt_off0002b4f7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B4F7 6084 bytes
font_05_sfnt_off0002c48c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C48C 3752 bytes

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