Malicious PDF — malware analysis report

Static analysis result for SHA-256 3273faf5f1e0f6b7…

MALICIOUS

PDF

182.7 KB Created: 2015-07-23 20:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c0a06b965eec48779b1153037f7513d8 SHA-1: 4462b0c1feae67edf30426149fffae382d4c5bb9 SHA-256: 3273faf5f1e0f6b7365c60e26c5f8f44856e2e0fafb6031f7e01d8dac9a7cc27
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, botcraftman.ru, which is indicative of a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for the attack pattern.

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=%D0%BA%D0%BB%D1%8E%D1%87+%D0%B4%D0%BB%D1%8F+windows+8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184307_skachat_programmu_dlya_nastroyki_sabvufera.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183185_lada_kalina_shema_yelektricheskaya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184438_blank_transportnoy_nakladnoy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off00029e45.bin
ca42880a78395348d86475d3c369ae2ca8406af07665490e6d2591ba80f0d12b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x29E45 6540 bytes
font_00_sfnt_off00023936.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23936 3556 bytes
font_01_sfnt_off000246b9.bin
a7740e41c691755e3c8b87b4b9e0124ae6d1739062c8af94828b3f16d60584c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246B9 14248 bytes
font_02_sfnt_off00027359.bin
a1c3ebb753c6c63404e361337c0ea14f77afb31da6f269dfefbf5e383efbcc93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27359 14536 bytes
font_04_sfnt_off0002b0cd.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B0CD 6084 bytes
font_05_sfnt_off0002c062.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C062 3752 bytes

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