Malicious PDF — malware analysis report

Static analysis result for SHA-256 98681ee50f9face4…

MALICIOUS

PDF

186.1 KB Created: 2015-08-08 09:55:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0981888b1ea11af2c666305b26b70fbd SHA-1: 4e8e869af5266245254e4b3196256ab5a03aa04e SHA-256: 98681ee50f9face427a8772967812ab6345c1866f2937cb3d13f3fbfc35dc8d1
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of a malicious redirection attempt.

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=kingpin+life+of+crime+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383901_skachat_chorger_v46_dlya_tanki_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384279_skachat_3d_film_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383969_shma_israyel_tekst_na_ivrite.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024196.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24196 3556 bytes
font_01_sfnt_off00024f19.bin
4ccb8c3a8a3c60da259be004f318e2c7a6ca778d7f003e2b3014777785d4cd81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F19 15008 bytes
font_02_sfnt_off00027e18.bin
8057431c151b3ddfa7202cba552ee9926e7e4e70fe9bb93be285bde946e7ab3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E18 14792 bytes
font_03_sfnt_off0002a9c1.bin
3dfa9d1254923fc71ced4fea304e90cab549567f3f93960d9c4e80f41b02ad61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9C1 7228 bytes
font_04_sfnt_off0002beb3.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEB3 6084 bytes
font_05_sfnt_off0002ce48.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE48 3752 bytes

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