Malicious PDF — malware analysis report

Static analysis result for SHA-256 12666dd100aa845a…

MALICIOUS

PDF

49.9 KB Created: 2021-06-11 00:42:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 82b3195fa3316194d67b99a3ac12c251 SHA-1: a4dc0e57683acfb389a52d537c95df1065dfa1b1 SHA-256: 12666dd100aa845a770d71ded68e9236bee7e9e1abf05c2c4aedd2e9fd73ad17
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users towards game hack generators and potentially malicious redirectors. The primary link leads to a 'free Robux' generator, a common lure for phishing and malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious infrastructure.

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/how-to-get-free-robux-no-hack-2021-game-hack In PDF document text
    • https://www.tdbaska.hr/files/master-coin-hack-app_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-level-3_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • https://www.tdbaska.hr/files/oprewards-com-login_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-coin-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-snowman-roblox_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-robux-glitch-working-2021_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-home_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-robux-generator-no-human-verification-2021_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_off0000522d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x522D 27744 bytes
SHA-256: cc51670e02f4e3592a837f1361476843ed9b3b5976263368fcc7ae022da27374
font_01_sfnt_off00009121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9121 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009dc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DC9 19084 bytes
SHA-256: 7a372780d515ee2350df34a2483a7bd0b44043396199888d7c3c3e021af6f820

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