Malicious PDF — malware analysis report

Static analysis result for SHA-256 677c5e0e23e6f878…

MALICIOUS

PDF

376.0 KB Created: 2015-08-29 01:28:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d47f67778edbdd5b4746d950749c9182 SHA-1: 190670975549cec0804bc419ca28a9ee4c8013e1 SHA-256: 677c5e0e23e6f8786b277e5b548ddfebe39d50a8c5a30b84583a83369b48b15d
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a malicious redirector link. The embedded URL `http://botcraftman.ru/...` is identified as a known malicious redirector. While no scripts were extracted, the presence of a malicious link strongly suggests an attempt to lure the user to a harmful site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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=%D0%B1%D0%BE%D0%B3%D0%B4%D0%B0%D0%BD%D0%BE%D0%B2%D0%B0+8+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B8%D0%B9+%D1%8F%D0%B7%D1%8B%D0%BA+%D0%B3%D0%B4%D0%B7&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818164_skachat__knigu__master_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817673_skachat__snayper__yelit_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817603_reshebnik__po__angliyskomu_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005969f.bin
aff1c2f78d9fcfcf84de9c985c8dcff9ef9d10f2fcf93418e307aa350edf9763		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5969F 8428 bytes
font_01_sfnt_off0005aee1.bin
2cce23c35dd7e5dad6747a2b89bed40b98230d359bb08cf4dcc6a6063ed28b5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AEE1 15948 bytes

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