Malicious PDF — malware analysis report

Static analysis result for SHA-256 58ec8fef6ee3e1a3…

MALICIOUS

PDF

379.8 KB Created: 2015-08-20 06:22:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 383cc770569c141d3bdffe0d8277a365 SHA-1: 17e4065f9de64d29cc54d48dfd2d61197b5da7cb SHA-256: 58ec8fef6ee3e1a3f622a97b041d02eccc89666d58192905a0af2d7793fd3038
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the embedded URL, which likely serves as a lure to a phishing or malware distribution site.

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%90%D0%BD%D0%BD%D0%B0+%D0%BC%D0%B0%D0%BB%D1%8B%D1%88%D0%B5%D0%B2%D0%B0+%D0%B0%D0%B2%D0%B0%D0%BD%D1%82%D1%8E%D1%80%D0%B8%D1%81%D1%82%D0%BA%D0%B0+%D0%BA%D0%BD%D0%B8%D0%B3%D0%B0+4+%D1%87%D0%B8%D1%82%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4629/4629290_archicad_15_skachat_besplatno_russkaya_versiya_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4627/4627086_igra_alias_kartochki_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4627/4627886_licenzionnuye_akkauntuy_maynkraft_za_10_rubley.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a2ca.bin
84d2b7ad1d8c6e4bddcf50b82e3f3d038c68e2d168b5b36801b50162785f2285		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A2CA 8756 bytes
font_01_sfnt_off0005bc7b.bin
4b026cbd101fa71450d81aadb92b2eed7e128fdc5bc42b13a79fc8a0b11b2ae3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC7B 16768 bytes

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