Malicious PDF — malware analysis report

Static analysis result for SHA-256 46d6155b42db4dbb…

MALICIOUS

PDF

186.0 KB Created: 2015-07-25 00:09:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 012c37e2ad40619d7ab1bfc59b3cd6b7 SHA-1: f3afb8614d740913ca8dc60621ea3749a2900c60 SHA-256: 46d6155b42db4dbb7bc43ee096580db355366464abbb7a30f2498e296f9a776f
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is flagged by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly indicates maliciousness. The document body is largely unreadable binary data, but the presence of the malicious URL is sufficient to determine the attack pattern. 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=sha17c7446200c478814cc983a04fa8431bfdba95f19+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4194/4194841_skachat_autocad_2007_rus_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192242_skachat_cs_16_na_android.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187080_skachat_narezki_na_telefon_besplatno_novinki_2014.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024080.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24080 3556 bytes
font_01_sfnt_off00024e03.bin
ba33f7aaccc976a29c0a1501e0d491034667a7b55d15e2fe63fb4ddbad23998c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E03 14668 bytes
font_02_sfnt_off00027b2d.bin
b2e18a4c8063a1f3d315b5a4662bf0c97ecf77078a7d3227a346a37836382127		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B2D 15232 bytes
font_03_sfnt_off0002a811.bin
646ca88a0cf15e9ceda13f37f92c8b215b08a98507974f121167baf3cdb308fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A811 7464 bytes
font_04_sfnt_off0002be16.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE16 6084 bytes
font_05_sfnt_off0002cdab.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDAB 3752 bytes

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