Malicious PDF — malware analysis report

Static analysis result for SHA-256 38c392d55453edf0…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 04:46:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: afd67746e6498a361533bd1028bfb19f SHA-1: 624ab2471ae60ffcb38c02410dea7dc27557750a SHA-256: 38c392d55453edf0ce9351776eb65a56488cfa95e337ddbaf2e831a6048b219f
160 Risk Score

Malware Insights

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

The PDF contains embedded URLs and document body text that explicitly mention hacking popular online games like Roblox and Coin Master, suggesting a lure for users to download malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The presence of multiple links to similar 'hack' documents indicates a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/how-to-hack-someones-roblox-account-game-hack In PDF document text
    • http://perpus.i2s-learning.com/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/xray-hack_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/pokemon-go-free-play_GM1094591345.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-do-you-get-free-roblox-money_GM431946152.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_004_off00004e7d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E7D 26320 bytes
SHA-256: 476e38964abea3e3360e6ea85f61fc72e5ccea6d3e065b31e862ef5225c5b3a3
font_01_sfnt_off00008b8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8E 18852 bytes
SHA-256: 030760a2b9f78489f4f2527f4aa1c5c01c299c9e8e159a1c649dae053cbb598d