Malicious PDF — malware analysis report

Static analysis result for SHA-256 78f5e01ac83e56f6…

MALICIOUS

PDF

47.7 KB Created: 2021-06-11 04:35:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d964ccb07c09f676dd262d60625b4cc6 SHA-1: 2200044fb1cbd6a0bcd1bd921ec7ffc03d3d0bcd SHA-256: 78f5e01ac83e56f62c830a4dc2ddd19bc0c411c4d19a97ff4596d779d69950da
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, masquerading as game hacks or generators. The primary lure URL, https://netcdn.tw/app/431946152/code-to-access-a-game-that-gives-90m-robux-free-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a social engineering tactic to trick users into visiting potentially harmful sites.

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/code-to-access-a-game-that-gives-90m-robux-free-game-hack In PDF document text
    • http://www.tdbaska.hr/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
    • http://www.tdbaska.hr/files/robux-miner_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://www.tdbaska.hr/files/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-robux-working_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-robux-download_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/robux-adder_GM431946152.pdfIn PDF document text
    • http://wolfzscriptsIn 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_off00004bf2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BF2 27256 bytes
SHA-256: aca1174ca21c0a452e25b7db2153a84e4ba64af33512b033719933022fd285eb
font_01_sfnt_off00008a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5A 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off0000940b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x940B 19516 bytes
SHA-256: 299b65efad6fda9a4f89c32951ad27dbe61ced857975c3efceb1628b30a4434c

Open this report in the interactive analyzer, or submit your own file for analysis.