Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f62ec371f401bb6…

MALICIOUS

PDF

185.4 KB Created: 2015-07-23 20:59:38 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9aa778b821e58a592b9c5d18cf2e6cb2 SHA-1: 4f1a32f696d07e8cf6713863298ba34df6858c6e SHA-256: 1f62ec371f401bb6d229135b252f06a70e23893c312bfe0c67a85727cf50dae4
90 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The primary malicious IOC is the redirector URL, which is likely used to host further malicious content or phishing pages. No scripts were extracted, and the document body was truncated, limiting further analysis of the delivery mechanism.

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%BC%D0%BE%D0%B4%D1%8B+%D0%B4%D0%BB%D1%8F+%D0%B5%D0%B2%D1%80%D0%BE+%D1%82%D1%80%D0%B5%D0%BA+%D1%81%D0%B8%D0%BC%D1%83%D0%BB%D1%8F%D1%82%D0%BE%D1%80+2+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+1825&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183199_lavrovopesochnya_kaluga_shema_proezda.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184635_biznes_plan_po_razvedeniyu_kur_kurinuyy_biznes_skachat_primeruy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184362_instrukciya_po_ohrane_truda_dlya_vracha_kdl.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002421a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2421A 3556 bytes
font_01_sfnt_off00024f9d.bin
49afe0e63e418452435acc52967585c97773e71555789cebce1650db3d37b06f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F9D 14168 bytes
font_02_sfnt_off00027c59.bin
0cb5993c996c18568c4d5603c099e23c089cf2c4817e874cb320ba0180da8e28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C59 14640 bytes
font_03_sfnt_off0002a788.bin
426b0bb3e23779655c63d9256c6de4c951ab1691e8b25cf6a90d27ea35ae0938		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A788 6924 bytes
font_04_sfnt_off0002bbb2.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBB2 6084 bytes
font_05_sfnt_off0002cb47.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB47 3752 bytes

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