Malicious PDF — malware analysis report

Static analysis result for SHA-256 5df2e79e7a6d2da6…

MALICIOUS

PDF

48.6 KB Created: 2021-06-08 18:45:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 276b948178f832e7d4188cb15ebe9b99 SHA-1: 61eb44739727901bbe2131f3b475fa72086bd72d SHA-256: 5df2e79e7a6d2da6d2c56d0f9803fb73a67294cf345fe19df5a0f9c233d0b3c5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appears to be a game hack or free item generator. These links redirect to malicious infrastructure, specifically the URL https://netcdn.tw/app/431946152/free-items-on-roblox-in-a-game-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs reinforce this lure-based attack pattern.

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/free-items-on-roblox-in-a-game-game-hack In PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robux-free-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
font_00_sfnt_off00005266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5266 26528 bytes
SHA-256: 275f1c3179e67c8c8c2fcfa0d919be6ef3c55d0f930b10dee500a9eba0b3632e
font_01_sfnt_off00008df9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF9 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009aa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA0 18540 bytes
SHA-256: 52d0fc73911f1078426bfbe50bb058d9daf96ee2f517156747e78efc5ced8381

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