Malicious PDF — malware analysis report

Static analysis result for SHA-256 98a16aebfe0571d6…

MALICIOUS

PDF

45.3 KB Created: 2021-05-14 07:09:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fc95f3ba7ec539207f86f83de3cf108a SHA-1: 30e2e3344f0a9dd9a13d276621eff5f54740f434 SHA-256: 98a16aebfe0571d6250bd6b8f35733ee4d992c25c4a34e2dfef4469d53fbd4e2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a website offering 'free generator / game hack' content, identified as a lure for malicious activity. The ML classifier also flagged this PDF with high confidence. The embedded URLs are likely part of a phishing or malware distribution scheme, aiming to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/431946152/blox-best-robux-game-hack In PDF document text
    • http://reggieslockandkey.com/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4924 26284 bytes
SHA-256: f1c331de42fa6cc3ef133cd0958256fabc3faf402b0233ab69183a3a3b5df4da
font_01_sfnt_off00008546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8546 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008f31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F31 18028 bytes
SHA-256: c8ab82621ec7f064c11414a5e1a29f386e261b50dcc0eed2286f6c560c7e59c4

Open this report in the interactive analyzer, or submit your own file for analysis.