Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1ee559df547fd61…

MALICIOUS

PDF

36.3 KB Created: 2021-05-10 11:31:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b5b4b69c307d6d1afa300a0a2de42c42 SHA-1: 004a16a8e097218d39b2ba699a04bdaa39c2d0a8 SHA-256: b1ee559df547fd612a8224d269c9bae165ff529426c58a21a4994f7a33fee592
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link pointing to a suspicious URL, which is also present in the document body. The document also contains a visual download button lure, suggesting an attempt to trick the user into downloading a payload. No scripts were extracted from this sample, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

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-3.4.3-apk-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000343f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x343F 24784 bytes
SHA-256: cdafd197bc1e509ae5ea2f596e7ed7e62c507a81de8208206f276dcf5ba99b50
font_01_sfnt_off00006cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC2 18196 bytes
SHA-256: c3b275253d9351e2e74b82a9dafc4156583904968b89422ea15a6a95515ae557

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