Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c6bfab935d6621d…

MALICIOUS

PDF

49.5 KB Created: 2021-06-10 16:57:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a4da545cc354ac8e299ce6b34b830a9d SHA-1: 7eb070e41a0856de19169fd5923ea08dbf9da035 SHA-256: 9c6bfab935d6621dce3841c16787e88aeffc6715029806314d79dc8eea5f0f72
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and free currency generators. The document body and extracted URLs strongly suggest a phishing or scam attempt to lure users into clicking malicious links. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/roblox-one-piece-millenium-hack-devil-fruit-game-hack In PDF document text
    • https://7gking.tw/upload/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/freecoins_GM406889139.pdfIn PDF document text
    • https://7gking.tw/upload/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://7gking.tw/upload/files/how-do-you-get-tiktok-hearts-for-free_GM835599320.pdfIn PDF document text
    • https://7gking.tw/upload/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://7gking.tw/upload/files/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://7gking.tw/upload/files/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • https://7gking.tw/upload/files/roblox-sexually_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • https://7gking.tw/upload/files/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://7gking.tw/upload/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://7gking.tw/upload/files/free-ways-to-get-robux_GM431946152.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_off0000509c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x509C 27104 bytes
SHA-256: a183cb94dc593f60f40a58ef3bfaa6926810fb00aacdd790aaca230e5cadec43
font_01_sfnt_off00008e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E16 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009b28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B28 19600 bytes
SHA-256: dd7b8b5958679abb8f5a8e750673a80e9108538003a3611e21f4eff406cecea4

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