Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b1ac820ca7a8f28…

MALICIOUS

PDF

363.0 KB Created: 2015-08-23 14:34:46 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-10-02
MD5: b444772623b184d72134966b4385bed6 SHA-1: da99981abe04068e1e3e41411854ddd76ce9c9df SHA-256: 6b1ac820ca7a8f2811186bac5b47f67693eb4642c3448dce3891853b61ab07a1
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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=nokia+lumia+710+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4685/4685611_avatariacheater__jimdocom__chit_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4685/4685624_mailru__pass__cracker_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4684/4684124_skachat_igru_maynkraft_versiya_181_cherez_torrent.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005646a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5646A 8968 bytes
SHA-256: d20e484990c2c06c9aa2994aed4e20279c4e7a49d65b9801cfa1f459a2245390
font_01_sfnt_off00057d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57D78 15780 bytes
SHA-256: 7e1511b3d70b0950652e21a7b7434e2a2d42144a8383b450d67ff3b5692c07d4

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