Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b28a08ccbb49304…

MALICIOUS

PDF

36.1 KB Created: 2021-06-19 05:06:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cad73d4a8f7307218606feac699efbda SHA-1: 12cfb7b79e1cf9f1ac9a531c1ff212f83d7b0f8a SHA-256: 6b28a08ccbb4930465840350e82f4b89e3a09e9898e6db144780560039588be1
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a game hack lure, directing users to a known malicious redirector. The document body and embedded URLs reinforce this lure by mentioning game hacks and exploits. While no scripts were explicitly extracted, the nature of the lure suggests an attempt to lead the user to a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-do-i-hack-someone-on-roblox-with-edidthiscookie-game-hack In PDF document text
    • https://www.croydex.com/uploads/files/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/videos-de-como-ser-hacker-en-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/hack-minecraft_GM479516143.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/roblox-new-free-items-2021_GM431946152.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/114-4-hacks_GM479516143.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/how-you-get-robux_GM431946152.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/cheat-roblox-blood-moon_GM431946152.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://www.croydex.com/uploads/files/files/free-robux-generator-no-human-verification-or-survey-2021_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
font_00_sfnt_off00003243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3243 22744 bytes
SHA-256: f3ccf22e5486d73ccaade82cf110042e3ca8ba3d11bc797fb2461cfc62660d2b
font_01_sfnt_off00006525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6525 20012 bytes
SHA-256: bb1daa1b8401321892886b69fab313269a70648f094a58ce8d8e4b97e4231e41