Malicious PDF — malware analysis report

Static analysis result for SHA-256 8adf4c76cbd41431…

MALICIOUS

PDF

45.1 KB Created: 2021-05-14 02:05:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e732e26d80f048f01c559b105d45d226 SHA-1: 8d134d840631d7593d940e3e68055c7cd7d63b2b SHA-256: 8adf4c76cbd4143129187fbd64e832f3c905747160e6744b6c5daf16c25e8f74
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks. The document body and embedded URLs reinforce this theme, suggesting a phishing or scam attempt. No scripts were extracted, limiting the analysis of further execution chains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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.xyz/app/431946152/how-to-hack-to-get-robux-game-hack In PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-download_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-bedrock-hacks-windows-10_GM479516143.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_002_off00004677.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4677 26772 bytes
SHA-256: 4f44721c4063d1905a7cd4644f50dc7bb71862d566e1724e1c16f7d412f302ce
font_01_sfnt_off00008301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8301 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00008d10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D10 18516 bytes
SHA-256: e2a97b64806b22db336191728b408e5b7179700d4ee5fd3b4b30addea2706a3c