Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c04741699e5a646…

MALICIOUS

PDF

363.5 KB Created: 2015-08-21 09:32:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c22696b534cb32bf1ad5802f8f58b8d3 SHA-1: 0eef0e900b1ebae620b6a4d6956b8412cbc556d1 SHA-256: 6c04741699e5a646b91ea70f226e90425e6337cca6b00c10b7ba183e980da4f4
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and contains a link to a known malicious redirector, http://botcraftman.ru/. This suggests the document is designed to lure users to a malicious website, likely for phishing or malware delivery. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%B0%D0%BA+%D1%81%D0%B4%D0%B5%D0%BB%D0%B0%D1%82%D1%8C+%D1%81%D0%B2%D0%B5%D1%80%D1%82%D1%8B%D1%88+%D0%B4%D0%BB%D1%8F+%D0%B7%D0%B0%D0%BC%D0%BA%D0%BE%D0%B2+%D1%87%D0%B5%D1%80%D1%82%D0%B6&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654692_nastolnuye_igruy_dlya_vzrosluyh_skachat_i_raspechatat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654847_skachat_gotovuye_zombi_servera_dlya_ks_16.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654715_shutochnoe_pozdravlenie_na_yubiley_ot_kitaycev.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056acf.bin
d48a204c2c163757436f0d27f9714a3b03e13ef06bbfa26674eb396fa934f389		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56ACF 9072 bytes
font_01_sfnt_off0005847f.bin
599e566ef07d752d2f7236ab46f3d6dfdc5d1f08d303e53f97cc624b0bd52377		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5847F 13124 bytes

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