Malicious PDF — malware analysis report

Static analysis result for SHA-256 db54b4c1840aa489…

MALICIOUS

PDF

187.7 KB Created: 2015-07-23 19:28:12 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: eadbf5b54ee43d6388bdf898af0f2cef SHA-1: 6546f8e5d18b04fbec19c970c60c49595b7518a7 SHA-256: db54b4c1840aa489f0153bda6aae3d9139f6f2dc47339e699bde4494d0df4438
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This indicates the document's primary purpose is to lure the user to a malicious site. The ML classifier and ClamAV detection strongly support this malicious classification. No scripts were extracted, but the embedded URL is sufficient evidence of a malicious intent to redirect the user.

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-7494954-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7494954-0
  • 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%80%D0%B0%D0%B7%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D0%BA%D0%B0+%D1%83%D1%80%D0%BE%D0%BA%D0%BE%D0%B2+%D0%B2+%D0%BD%D0%B0%D1%87%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D1%85+%D0%BA%D0%BB%D0%B0%D1%81%D1%81%D0%B0%D1%85+%D0%B2+%D1%83%D0%B7%D0%B1%D0%B5%D0%BA%D0%B8%D1%81%D1%82%D0%B0%D0%BD%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183178_kuryatnik_proekt.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183186_kursovoy_proekt_po_arhitekture_obschestvennoe_zdanie.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183192_kusudama_roza_shema.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024a2f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A2F 3556 bytes
font_01_sfnt_off000257b2.bin
47fc1cda3cb373a66787e8e573e0761acd1bb3a0267b8a37cb91d5e993f1ccd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x257B2 14784 bytes
font_02_sfnt_off000285e2.bin
a6626c0bd3595dc776735a93968cf26fa9368d0e017313712711ccf7ec06347e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x285E2 14532 bytes
font_03_sfnt_off0002b0d2.bin
5e265838fa1ac75a841f044d8bbded515a09c03a107501332edf4eec5ea68ab5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B0D2 6944 bytes
font_04_sfnt_off0002c4f4.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C4F4 6084 bytes
font_05_sfnt_off0002d489.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D489 3752 bytes

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