Malicious PDF — malware analysis report

Static analysis result for SHA-256 64177a67f1b06198…

MALICIOUS

PDF

41.7 KB Created: 2021-05-14 14:42:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cbde7ee46f56e38c50ba62e012d43d5d SHA-1: 6659e31196a2f4ecff43ff7347505bd4e135ae9d SHA-256: 64177a67f1b06198d37e01738997cdb91a4baa3e08a0d6dcd262075112cbd717
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external URLs, including one identified as a malicious redirector. The primary lure appears to be related to 'game hacks' and 'free generators', suggesting a social engineering tactic to trick users into downloading potentially unwanted or malicious software. No scripts were extracted, but the embedded URLs are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/apk-coin-master-hack-game-hack In PDF document text
    • http://www.compusiteinc.com/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-free-spin_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/best-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-coins-and-spins-for-coin-master-game_GM406889139.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_003_off0000484d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x484D 24852 bytes
SHA-256: 9582b402d83ef80f0699d12a9bf9f1876cb8156ddfc62f3522200970d664be28
font_01_sfnt_off00008198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8198 17892 bytes
SHA-256: 10848dcb94fa8ef52647dff51f313a82fe0a75c442c4a6ae41e72789ca7f1d9e

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