Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d6e71f9d0e07a10…

MALICIOUS

PDF

41.7 KB Created: 2021-05-14 11:35:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cdbc69e658ada578d5a27e53c1135f74 SHA-1: bf1ae67da200fd7636694560b840cb6d4f0e8374 SHA-256: 3d6e71f9d0e07a10b87357927dd50fff7bfc0fb085b6ef16d9df771208f651e8
160 Risk Score

Malware Insights

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

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary malicious URL identified is https://netcdn.xyz/app/431946152/roblox-exploit-scripts-game-hack. The document body, though partially corrupted, contains references to these lures and other URLs that likely serve as part of the redirection chain. No scripts were extracted, but the heuristic firings strongly indicate a phishing or scam attempt via malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/roblox-exploit-scripts-game-hack In PDF document text
    • http://force-seniorklub.dk/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/roblox-promo-codes-free-robux_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_003_off00004725.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4725 25100 bytes
SHA-256: bb1c52fbf7d82ff0eefd6404233fb4f1f588ac93ad8af464657cdef845d0a2e5
font_01_sfnt_off000080d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D9 18184 bytes
SHA-256: 094a9499485b6a56b01a21850e159571c55a798cea0220f924198f071f030942

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