Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d0361dc7c476f5…

MALICIOUS

PDF

185.2 KB Created: 2015-07-24 09:21:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d97b90e99c64155e03d9ccb35ce02226 SHA-1: 09026c4e6d19766e24d44acf79270edffaf9531b SHA-256: 93d0361dc7c476f5b61e9c7cbbc51126bf8b745fc6ff050794ceaf2f3a0b7740
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also flagged it with high confidence, and ClamAV identified it as Pdf.Dropper.Agent-7494442-0. The primary IOC is the malicious URL, which is likely used to deliver a secondary payload or lead the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7494442-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7494442-0
  • 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+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%82%D0%BE%D1%80+%D0%B4%D0%BB%D1%8F+windows+7+enterprise&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186204_mirrors_edge_2_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184722_igo_primo_2015_skachat_besplatno_dlya_android.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187317_kviddich_s_drevnosti_do_nashih_dney_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a55c.bin
c277f669213c196ff0acb244c8b66b5a51691b98347525553590cc64a2e6be23		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A55C 7356 bytes
font_00_sfnt_off00023eb0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23EB0 3556 bytes
font_01_sfnt_off00024c33.bin
cf14e48ecf83730f399120301fc8f0efed57946101da323d88b69e8a82ba52d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C33 14584 bytes
font_02_sfnt_off000279da.bin
c63c5326cdc0ace607ddb5b8a13a29c8e023c11d0e6c6a96dced537202155273		 pdf-font-stream PDF embedded font (sfnt) at offset 0x279DA 14696 bytes
font_04_sfnt_off0002baf2.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAF2 6084 bytes
font_05_sfnt_off0002ca87.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA87 3752 bytes

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