Malicious PDF — malware analysis report

Static analysis result for SHA-256 70b8dc1ebf39d173…

MALICIOUS

PDF

344.2 KB Created: 2015-08-21 09:20:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 556e2db75eece9764d850ed9feb6165d SHA-1: c71f871040f336b8e5c9d3aadefe61442a45b600 SHA-256: 70b8dc1ebf39d17387047a3e2cf8f560fafe9233966cce329f921c00bfaf8b16
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 link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is likely part of a phishing or malware distribution chain. No scripts were extracted, but the presence of a malicious link strongly suggests an intent to redirect the user to a harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%94%D0%B5%D0%B2%D1%83%D1%88%D0%BA%D0%B0+%D0%B4%D0%B0%D0%B2%D0%B8%D1%82+%D0%BA%D1%80%D0%BE%D0%BB%D0%B8%D0%BA%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654695_kamedi_vumen_2015_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654728_koduy_na_test_drive_unlimited_na_dengi.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654708_skachat_albom_balagan_limited_cherez_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005155f.bin
c357a573dda000fc2ec08d972c6d262d755d461a3b950f9addbea5bf238cc5b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5155F 8584 bytes
font_01_sfnt_off00052de0.bin
7d55de409cf9a4104fe604abfb08b15507974f15093db5cc760922640cafa331		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52DE0 16388 bytes

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