Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b2b214632bd050…

MALICIOUS

PDF

184.8 KB Created: 2015-07-28 13:28:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 29506960ffb7a976eda99569daf8ccae SHA-1: 51ec229b1fae9303f5d0b9432ba738de8d4b253d SHA-256: 88b2b214632bd05050eca0ba92efd1eb6b83e6f72cd29c6e0f5167a99464791c
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 linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The primary IOC is the malicious URL embedded within the document, which likely serves 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=%D0%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D0%BE%D0%B4+traincraft+%D0%B4%D0%BB%D1%8F+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+172&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4221/4221475_nod32_5_skachat_besplatno_russkaya_versiya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4230/4230570_prohozhdenie_medkomissii_v_voenkomate.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4203/4203284_unigraphics_nx_75_rus_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023d28.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23D28 3556 bytes
font_01_sfnt_off00024aab.bin
f12aac2d143f8b68402829ca20f8be5632cdbed3cc2a33b77d4deda4322d4ed1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24AAB 14612 bytes
font_02_sfnt_off000277b8.bin
0f0aee689471f0044145146eacd724ddae3ee0202757c5d6ff5bc615204ee2ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x277B8 14720 bytes
font_03_sfnt_off0002a350.bin
a03ba31c418f131b2915d16a8a6f814d6fce47bfb4f83d17db2174cbe782fd20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A350 7440 bytes
font_04_sfnt_off0002b949.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B949 6084 bytes
font_05_sfnt_off0002c8de.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8DE 3752 bytes

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