Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d3f057b3ae8f376…

MALICIOUS

PDF

185.3 KB Created: 2015-07-24 23:53:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 24b3572262fecbca140f566b8ffa0a8f SHA-1: 2271e6d87abd400f08fbb5c92ab0a9f1afdf7da9 SHA-256: 2d3f057b3ae8f376090dbda7af189510e7b3839da0f96384fe714c04aad3e111
92 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 strongly indicated maliciousness. The embedded URL http://botcraftman.ru/?lip&keyword=new+english+file+intermediate+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8 is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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=new+english+file+intermediate+%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://img1.liveinternet.ru/images/attach/c/5//4195/4195694_prilozhenie_odnoklassniki_na_telefon.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192349_skachat_adobe_after_effects_cs4_x32_torrent_na_russkom.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188611_gaz_2217_sobol_barguzin__instrukcii_po_remontu.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a688.bin
db848736eb33c344216066623e4aaef4dda27df9ba3fa7f8000440894f4c86f4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A688 7172 bytes
font_00_sfnt_off00023fdb.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FDB 3556 bytes
font_01_sfnt_off00024d5e.bin
ee0cf4108a8eec72bc9556d204326ed226e5f34f158aac8162e2e73d3196d363		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D5E 14472 bytes
font_02_sfnt_off00027a1b.bin
3293b73a00d183783fff0726bc1f98b20c5462d09d0c5b34b27a22aa8e367f76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A1B 15068 bytes
font_04_sfnt_off0002bb69.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB69 6084 bytes
font_05_sfnt_off0002cafe.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAFE 3752 bytes

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