Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba32f9ee6acd06de…

MALICIOUS

PDF

36.0 KB Created: 2021-05-13 13:13:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cc4d12441fdd695f9b5b0c1ea8bc2ede SHA-1: 6f6e074b7e03743ac05881d68960f2644f4008c1 SHA-256: ba32f9ee6acd06deb5ca08ae6faa7972be4f3f2443f57c42f038f089ee7a1fef
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a heuristic firing for a malicious redirector link pointing to a suspicious URL, which is also present in the document body. This suggests an attempt to trick the user into downloading an application. Although no scripts were extracted, the presence of a malicious link and a call-to-action phrase indicates a phishing or social engineering attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0228

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 https://netcdn.xyz/app/406889139/hack-coin-master-apk-3.2-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003245.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3245 24740 bytes
SHA-256: 8cb2a1e01f61fcb552ddcb7eb52e9164def7e7d1d38203067e69ea642403da9e
font_01_sfnt_off00006b69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B69 18256 bytes
SHA-256: 2de3a067c92fd750cac538864d09afc8d4d9cd3de69932c6374fba6ea057edab

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