Malicious PDF — malware analysis report

Static analysis result for SHA-256 1629b23f2080a28c…

MALICIOUS

PDF

36.1 KB Created: 2021-05-12 04:34:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b22c4e182544e5ff06b37693a05f728e SHA-1: 865d40d0eb69c8d05cbe93c0f290e534add5cf1d SHA-256: 1629b23f2080a28ce7723580f17bd3011797c849ace480ace04ff2aa6533d837
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirector lure, pointing to malicious infrastructure. The embedded URL and the document body text both reference this lure. While no scripts were extracted, the primary function appears to be directing users to a malicious site, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier clean score 0.0283

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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-hack-ios-2021-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 2

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_off000031e8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31E8 26484 bytes
SHA-256: b4598f36dcda1a165bb509e6206634a86085f6f74a3de487e3382ef6c83aacac
font_01_sfnt_off00006c22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C22 18116 bytes
SHA-256: 663054a01704a270a88e5c65db4cbe82af3fd3dd58587b1cb05b092ffe619ba9

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