Malicious PDF — malware analysis report

Static analysis result for SHA-256 72420ba25769b443…

MALICIOUS

PDF

36.7 KB Created: 2021-05-15 05:37:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 194749f91aae8121cc7b15f6c59780c6 SHA-1: 2e3121ebbf5b7a66732626e57b9b49ff908bcb6e SHA-256: 72420ba25769b4437100d35b46f904b3f2fb88b982132679cb55222c36ae9162
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to a URL that appears to be a lure for downloading a modified application. The document body also contains text and a link that reinforce this malicious download lure. The presence of a 'download button' heuristic further supports the attack pattern.

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/coin-master-3.2-mod-hack-apk-download-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off00003445.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3445 24692 bytes
SHA-256: 0d40992094f3434837778492ded47618e5281e26276881c0d1b6091ed7918833
font_01_sfnt_off00006c51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C51 18836 bytes
SHA-256: ff135a53a420a418677011958d681f26302d42eb767583c3b8513888fb402d9d

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