Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3c6418451ba78f8…

MALICIOUS

PDF

186.0 KB Created: 2015-08-08 10:49:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ba076edbff16ec99a54cc96cd1dae979 SHA-1: cd59e6538f0313b86556419ac8cc1eaea7aa4415 SHA-256: d3c6418451ba78f87c359bc82956192132dc5a658f510db5532af12911fb838c
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical finding for a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The primary malicious indicator is the embedded URL pointing to 'botcraftman.ru', which is known to host malicious content. No scripts were extracted, but the presence of a malicious redirector suggests the document's purpose is to deliver a secondary payload.

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-7526081-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7526081-0
  • 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%BC%D0%BE%D0%B4+%D0%BD%D0%B0+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+172+%D0%BD%D0%B0+%D1%80%D1%8E%D0%BA%D0%B7%D0%B0%D0%BA%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383981_skachat_chituy_dlya_css_v80.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384784_violetta_2_sezon_smotret_onlayn_na_russkom.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385460_skachat_igru_garis_mod_9_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243fa.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243FA 3556 bytes
font_01_sfnt_off0002517d.bin
e2439924acf247dee407559e04fafcfa04777c5d23aa957d26c9579916a41802		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2517D 14644 bytes
font_02_sfnt_off00027f3e.bin
6d9e3f05583fbeced0a5aa3e8ec4239b9b12a157addada1e2ce25f555aed3a19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F3E 14512 bytes
font_03_sfnt_off0002aa1b.bin
729e09b7bbad5e802411f9bddb4e097714d9516ac16412e588abb0c1760baea9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA1B 6896 bytes
font_04_sfnt_off0002be15.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE15 6084 bytes
font_05_sfnt_off0002cdaa.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDAA 3752 bytes

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