Malicious PDF — malware analysis report

Static analysis result for SHA-256 76e15a40952c2b91…

MALICIOUS

PDF

45.6 KB Created: 2021-06-07 18:04:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f388ee03c09e74d0733303f3cc0f8395 SHA-1: fd436cf0194a3e95c3f7e4308b082719512a55a6 SHA-256: 76e15a40952c2b918704f60d6af6645ca3d2e9a53eaacd4fc85099fce0d27a5e
160 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary link identified is https://netcdn.tw/app/431946152/how-to-get-free-vip-jailbreak-roblox-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector designed to exploit user interest in free game-related content. The document likely serves as a lure to download further malicious content or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/how-to-get-free-vip-jailbreak-roblox-game-hack In PDF document text
    • http://force-seniorklub.dk/images/tiktok-free-gallery_GM835599320.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/doing-free-robux-games_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/are-there-any-coin-master-hacks-that-actually-work_GM406889139.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_004_off0000519f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x519F 25444 bytes
SHA-256: f97ef1bb6091cdb04da98bee340070129a4c24bdf879f81e90d98949be53d653
font_01_sfnt_off00008ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE5 19208 bytes
SHA-256: ecf3bd1e864ab92f1653524b347cf2e18b98e204869b2cab61b138aa8c786643

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