Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df046541309ad2e…

MALICIOUS

PDF

57.0 KB Created: 2021-05-19 09:09:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6e5737dbf0e458197556c66ec09039de SHA-1: 5282875dbdcdefe283bae2ad2d541e859c56c360 SHA-256: 6df046541309ad2e5f6ff563b3a9fc3c6f8b436049b5adede92735dbd39d86ec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free spins' for popular games. The document body, though heavily obfuscated, contains references to these lures and the malicious URL. The presence of embedded URLs and the ML classifier flagging it as malicious strongly indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8254

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-free-spin-and-coin-game-hack In PDF document text
    • https://reggieslockandkey.com/images/op-rewards-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-script_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/robux-free-online_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c40.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C40 26584 bytes
SHA-256: 77ee2a562b5b5f94f5e9d42bcb0e1863eaca536574d776f4b4c4db3e0d042662
font_01_sfnt_off00008b09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B09 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off000095d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95D5 10352 bytes
SHA-256: e8590c0d54083525bcdfb59ffccff55be1339fbec6271d79fc1a3ccf25dd5eb3
font_03_sfnt_off0000ae7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE7C 18060 bytes
SHA-256: 7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7
font_04_sfnt_off0000cfd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD4 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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