Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fac38982c50c9f5…

MALICIOUS

PDF

36.3 KB Created: 2021-05-22 13:35:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8a97ef138e7bb7184b0942bba312de4e SHA-1: 8734dce44a24cd8e9d90625e9955b7609d065feb SHA-256: 5fac38982c50c9f5ebc558df4cdeefa6777b867ba8696a8ede834d8e7c45e8b2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains, specifically advertising 'free generator' or 'game hack' lures. The document body reinforces this by mentioning 'Free Coin Master Spins' and providing a call to action. The embedded URLs likely lead to further malicious content or downloads, indicating a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/free-coin-master-spins-game-hack In PDF document text
    • http://moto98.com/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://moto98.com/images/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/spin-coin_GM406889139.pdfIn PDF document text
    • http://moto98.com/images/free-tiktok-accounts-with-followers_GM835599320.pdfIn 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_002_off000033d4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33D4 25204 bytes
SHA-256: 28c1cc1724bf213374bc97fb4f6182330c1371ad80b35aea05a380b643ef862d
font_01_sfnt_off00006de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE9 17884 bytes
SHA-256: dbba0adc3b1b7bb8b2e5e51fec5d28ab169e2f7a165ed2a14d616932af559aea

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