Malicious PDF — malware analysis report

Static analysis result for SHA-256 36ba316a79900930…

MALICIOUS

PDF

185.3 KB Created: 2015-08-08 09:44:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 19c813730adabfc797e72bf9eff1774d SHA-1: e17b9b27ccfe69be8f8a0fe9ff424896196be180 SHA-256: 36ba316a7990093034d9dc016e4996ddd2b627f16b3d557e24ec9fdabf834970
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL http://botcraftman.ru/... is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery. 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81%D0%BC%D0%B5%D1%88%D0%B0%D1%80%D0%B8%D0%BA%D0%B8+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B2%D1%81%D0%B5+%D1%81%D0%B5%D1%80%D0%B8%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383890_semero_taynuyh_skachat_besplatno_torrent_fb2.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383831_yenciklopediya_yelektronnuyh_shem_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384233_skachat_gta_po_internetu.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241a2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241A2 3556 bytes
font_01_sfnt_off00024f25.bin
17761a4207cbd557fee67c8a363b3a5d16080fab7bc1fad4db1d34fa6f59c4d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F25 14748 bytes
font_02_sfnt_off00027d48.bin
8c5e5bc4674cee60ec6c1619e60533ff44be00efca6b5f228c587d2f19a61a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D48 14520 bytes
font_03_sfnt_off0002a817.bin
dfe5e9ec7da75114a53029f9fd84aff9ca629430db3b5747be8b848df24baf99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A817 6784 bytes
font_04_sfnt_off0002bb93.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB93 6084 bytes
font_05_sfnt_off0002cb28.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB28 3752 bytes

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