Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b4e84f05497653a…

MALICIOUS

PDF

40.3 KB Created: 2021-04-27 09:51:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 77456bb2616a43ee49134a126dfd8d54 SHA-1: dbfc2c3c25f7569ae8b6c2b0223aa081782b99a7 SHA-256: 6b4e84f05497653ad1e829c5cedea4dfc14c74a1e574584b9885be0d12010af3
160 Risk Score

Malware Insights

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

This PDF document employs a common lure of 'free Robux' or game hacks to entice users into clicking a malicious link. The primary link, https://netcdn.xyz/app/431946152/free-robux-no-human-verification-2021-or-survey-or-offers-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and the nature of the lure suggest it is designed to exploit vulnerabilities or lead the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/free-robux-no-human-verification-2021-or-survey-or-offers-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/get-free-robux-roblox-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-recover-a-hacked-pin-in-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/rosenberg-roblox-hack-pain-access.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-brighton-and-hove-buses-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/show-me-how-to-get-free-robux.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-do-i-get-free-robux-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-hack-2021-cheat-engine-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-how-to-get-free-robux-on-computer.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-change-username-for-free-on-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-no-password-on-ipad.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_off0000416c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x416C 23864 bytes
SHA-256: 568d56b7230a220cff05688d3e9a16091bf305ed43d9b9be09e536fcb1282719
font_01_sfnt_off00007799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7799 19556 bytes
SHA-256: 5982bf590f14df65978db60816b938120b9460c08a7ebb3e902c9e6fc1fc93a6

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