Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7e98adca9f426f5…

MALICIOUS

PDF

185.3 KB Created: 2015-07-23 20:34:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 01055c2dc411151f0a415e3157f069ac SHA-1: bc058083c43f9fed34aaed25d118436bce03b9c7 SHA-256: c7e98adca9f426f56826c824657b5b4137542bd4b23d2476c3ac69c9a8f652c2
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted from this sample.

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%97%D0%B0%D0%BB%D0%B8%D0%B2+%D0%B4%D0%B5%D0%BD%D0%B5%D0%B3+%D0%BD%D0%B0+%D0%BA%D0%B0%D1%80%D1%82%D1%83+%D0%B1%D0%B5%D0%B7+%D0%BF%D1%80%D0%B5%D0%B4%D0%BE%D0%BF%D0%BB%D0%B0%D1%82%D1%8B&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183186_kursovoy_proekt_po_arhitekture_obschestvennoe_zdanie.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184416_wildlife_park_3_rus_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184507_age_of_empires_4_skachat_besplatno_russkaya_versiya_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023fc9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FC9 3556 bytes
font_01_sfnt_off00024d4c.bin
c0352f309a3b937b20e5f0631bae8dd0281978edfc3994e9eca6f19897d7da3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D4C 14976 bytes
font_02_sfnt_off00027c29.bin
f388d38563e792762eb460b207fc94ea1223f3d0a36115f2197d496a7b0dd15a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C29 14720 bytes
font_03_sfnt_off0002a794.bin
ede635c5e747e550a96ca5ad9a38f1149b3b6a1031f5e9eb0825c093ec5deffa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A794 6852 bytes
font_04_sfnt_off0002bb55.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB55 6084 bytes
font_05_sfnt_off0002caea.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAEA 3752 bytes

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