Malicious PDF — malware analysis report

Static analysis result for SHA-256 5839deda2fb2a72e…

MALICIOUS

PDF

186.1 KB Created: 2015-07-25 00:18:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 7426322bdf0fe1ff9e3d4b57bf4e57f0 SHA-1: 83ce3b2a7f1df27a203bd02b7742295b5a7a8923 SHA-256: 5839deda2fb2a72e50a5b6308e1ebbe6f77f088e51bd6dd8d310af2a66bb3f14
68 Risk Score

Malware Insights

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

The PDF file contains an embedded JavaScript stream and a critical heuristic firing for a malicious redirector link. The redirector URL, http://botcraftman.ru/, is the primary indicator of malicious intent. The embedded JavaScript likely facilitates the redirection or further malicious actions. The file's metadata indicates it was generated by wkhtmltopdf, a tool sometimes used to create malicious documents.

Heuristics 3

  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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%BD%D0%B0%D1%87%D0%B0%D0%BB%D0%B0+%D0%BD%D0%B0%D1%80%D1%83%D1%88%D1%8C%D1%82%D0%B5+%D0%B2%D1%81%D0%B5+%D0%BF%D1%80%D0%B0%D0%B2%D0%B8%D0%BB%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+fb2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192807_skachat_besplatno_film_tri_metra_nad_urovnem_neba.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195357_drayver_dlya_diskovoda_super_writemaster.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192266_skachat_varkraft_3_frozen_tron_126a_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243c7.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243C7 3556 bytes
font_01_sfnt_off0002514a.bin
0ba37e0f45493ab5016fcc91b0722b8ffa3b363baf5382fa253fa4eb30504d6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2514A 14852 bytes
font_02_sfnt_off00027faa.bin
dd6b055d97d1a99253bc0b7d940bd88a9bf812d704c04ea52b973d1a44a8b65e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FAA 14752 bytes
font_03_sfnt_off0002ab38.bin
3f602e0b7f4ad8662af9ebe0241810cd8b4d1ebeb332aa0cfa00b53b91d47c53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB38 6748 bytes
font_04_sfnt_off0002bec2.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEC2 6084 bytes
font_05_sfnt_off0002ce57.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE57 3752 bytes

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