Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b6f4eeb4ca247cd…

MALICIOUS

PDF

353.6 KB Created: 2015-08-21 09:18:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 4a4170dce55ef48beec4b32811f907f2 SHA-1: bdfb38ddd3f1e4667dac5212369df39eff29a5e3 SHA-256: 6b6f4eeb4ca247cd74afb7cda7c0e4290d06261e7636c49a1fa4701579e7697d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 flagged this PDF with high confidence. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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+%D0%B1%D0%B0%D0%BD%D0%BD%D0%B5%D1%80+%D0%B2%D1%8B%D0%BC%D0%BE%D0%B3%D0%B0%D1%82%D0%B5%D0%BB%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654749_koroleva_bala_smotret_onlayn_na_russkom_yazuyke_na_yu.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654681_chit_na_bessmertie_v_payday_2.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654746_dyevid_rok_mozg_instrukciya_po_primeneniyu_skachat.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053e8c.bin
a366d5ecb7880bc608a8ed92893a34222d64ab579aa9709d09d38bb92d2f32db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53E8C 9448 bytes
font_01_sfnt_off000558bf.bin
b2e19db04a22d7c8d70429987882addb788db50d0f11b6f1f65a7497bdff553c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x558BF 15428 bytes

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