Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee84921ad5d272b…

MALICIOUS

PDF

47.7 KB Created: 2021-06-07 10:44:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e71180801c6dd3265637435f416bd293 SHA-1: d42ab67359d941ab1aa24668dfe600ad4c35512e SHA-256: 2ee84921ad5d272bcc0386ea557a1e796b686e87079e5b28eb58e3c74ff34742
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The primary lure URL is https://netcdn.tw/app/431946152/flood-escape-roblox-hack-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector designed to entice users into clicking through to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/flood-escape-roblox-hack-game-hack In PDF document text
    • https://www.arquetopia.org/images/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50F8 24752 bytes
SHA-256: 3dc0ab98e558ac2050eedcddc45a0792008a1c68a84c3ce67f1115a484b1afbc
font_01_sfnt_off000089a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A0 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9648 18696 bytes
SHA-256: 26f79e0480f9e4d672924e75db7bae65c65dd842261a251c536de65d9baaeddd

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