Malicious PDF — malware analysis report

Static analysis result for SHA-256 82284f4b9791b4cc…

MALICIOUS

PDF

46.1 KB Created: 2021-06-11 07:29:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0727a1b383566737c769da44bf73c788 SHA-1: 09a26b038ecc6cf5e7606b8e640239e012f4fb84 SHA-256: 82284f4b9791b4ccfefe650d52b23860aa7f1a357da0e35d9b8ea9e57430221e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links to known malicious redirectors, specifically promoting game hacks and free generators for popular games like Roblox and Coin Master. The document body, though heavily obfuscated, contains references to these lures and embedded URLs. The primary malicious action observed is the redirection to potentially harmful websites designed to trick users into further malicious actions.

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-speed-hack-roblox-with-artmoney-game-hack In PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/what-game-on-roblox-gives-you-robux-without-hacking_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/earn-rbx_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-robux-2021-may-12-no-websites_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-cheatengine_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/tiktok-free-view-iphone-apk_GM835599320.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/ww-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_004_off00005326.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5326 25044 bytes
SHA-256: 307a8b38f4b2f2b70f451448092157a619c2bf3c9d158308e790aa39401bf4d4
font_01_sfnt_off00008d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3E 19724 bytes
SHA-256: 370d54fd314148234734a2847f6da051e4c8d9c8ad2b778f84a337535ea1bdd3

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