Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d7c542d01edcedf…

MALICIOUS

PDF

187.9 KB Created: 2015-07-23 19:44:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c6537d072274098614120af486f2c8df SHA-1: d39a1b8da8289ddc526217424485d1546ca56872 SHA-256: 1d7c542d01edcedf4a44dddcc6feda9dc75af75a4283049ecbaf59160aec7b15
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL, http://botcraftman.ru/, is highly suspicious and likely serves as a gateway to a phishing or malware distribution site. No scripts were extracted, but the presence of the malicious link strongly suggests a social engineering attack.

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%D1%80%D0%BE%D1%81%D1%81%D0%B2%D0%BE%D1%80%D0%B4+%D0%BF%D0%BE+%D1%84%D0%B8%D0%B7%D0%B8%D0%BA%D0%B5+%D0%BD%D0%B0+%D1%82%D0%B5%D0%BC%D1%83+%D0%BC%D0%B0%D0%B3%D0%BD%D0%B8%D1%82%D0%BD%D0%BE%D0%B5+%D0%BF%D0%BE%D0%BB%D0%B5+%D1%81+%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D0%B0%D0%BC%D0%B8&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://img1.liveinternet.ru/images/attach/c/5//4183/4183175_lada_kalina_yelektricheskaya_shema.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184319_kryak_alavar_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024a58.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A58 3556 bytes
font_01_sfnt_off000257db.bin
8331dcb579d2aff26473335b1c291ec71a797d8f308f857e23a9ea15e3efe51b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x257DB 15040 bytes
font_02_sfnt_off000286d2.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x286D2 14468 bytes
font_03_sfnt_off0002b185.bin
ac6b2eb15b81ec577dd98fb6407eb9a1a341e73331c5d1cdc47366522dbd4521		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B185 6936 bytes
font_04_sfnt_off0002c59f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C59F 6084 bytes
font_05_sfnt_off0002d534.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D534 3752 bytes

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