Malicious PDF — malware analysis report

Static analysis result for SHA-256 daacdddcd53462fc…

MALICIOUS

PDF

186.4 KB Created: 2015-07-23 21:25:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2df483267a11368f920b39959360eb89 SHA-1: a413b5624b855a877f29ca8b8912606073caf7f4 SHA-256: daacdddcd53462fc0695cf8cd9f8383d84f4f57cdb87324ff3de4c2a0169453e
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link. The ML classifier also strongly indicated maliciousness. The embedded URL `http://botcraftman.ru/...` is identified as a malicious redirector, suggesting the PDF's primary purpose is to lure users to a compromised site. No scripts were extracted, but the PDF structure and the malicious URL are sufficient indicators.

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-8789843-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8789843-0
  • 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=%D0%A2%D0%B5%D0%BA%D1%81%D1%82+%D1%88%D1%83%D1%82%D0%BE%D1%87%D0%BD%D0%BE%D0%B5+%D0%B1%D0%BB%D0%B0%D0%B3%D0%BE%D0%B4%D0%B0%D1%80%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%BE%D0%B5+%D0%BF%D0%B8%D1%81%D1%8C%D0%BC%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184436_blagodarstvennoe_pismo_studentu_za_prohozhdenie_praktiki_obrazec.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184637_prezentaciya_na_temu_bankovskie_kartuy.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183261_deesposobnost_fizicheskogo_lica_shema.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024450.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24450 3556 bytes
font_01_sfnt_off000251d3.bin
54d4bbf1a78d1dadfb06c4fbdd1b3bc7ce7e6c7c6946993026853a02ef671ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251D3 15044 bytes
font_02_sfnt_off000280f4.bin
c521cb7f32363069232cb6cf023e13d81dfc7f2346484feaa89f0b3c8cd570ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280F4 14520 bytes
font_03_sfnt_off0002abc6.bin
608aa3b4a0ce514d53cef2896555f7c8ec25c1b76d5d6239923094905c15683e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABC6 6912 bytes
font_04_sfnt_off0002bfc3.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFC3 6084 bytes
font_05_sfnt_off0002cf58.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF58 3752 bytes

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