Malicious PDF — malware analysis report

Static analysis result for SHA-256 5899d660e68b121c…

MALICIOUS

PDF

186.1 KB Created: 2015-07-23 21:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d42283ca317b291ea54acbaaa75ecae4 SHA-1: a3166c7f78127a0b95214451bb1017ccce51d065 SHA-256: 5899d660e68b121c13a0a9346115d07eb380b5c4b2cd7cd915b091bbf6fbc213
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, indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for the attack pattern.

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%B5%D1%80%D0%B8%D0%B0%D0%BB+%D0%B2%D0%B8%D0%BA%D0%B8%D0%BD%D0%B3%D0%B8+%D0%B2%D1%81%D0%B5+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD%D1%8B+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183202_kursovoy_proekt_po_ventilyacii.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184368_plagin_dlya_androida_dlya_prosmotra_video.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184746_vo_vse_tyazhkie_skachat_torrent_6_sezon.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024646.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24646 3556 bytes
font_01_sfnt_off000253c9.bin
14e09b5f490baaf08f525da6f8fe7b46917b20d6665da194d5e202b88b3451b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x253C9 14352 bytes
font_02_sfnt_off000280b9.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280B9 14468 bytes
font_03_sfnt_off0002ab6b.bin
37cba8527ba5da7af9978231d45a25bb0e277669c86e8e04b0214a234891d01d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB6B 6696 bytes
font_04_sfnt_off0002beab.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEAB 6084 bytes
font_05_sfnt_off0002ce40.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE40 3752 bytes

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