Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab05503625c75191…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 08:52:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b9b3f795082141ba88d51367e10064b1 SHA-1: 3c60f814bace9c7d9bdcd8ac933556036a806974 SHA-256: ab05503625c75191095e8a23c24607e2a184f1ac02d20db7e5c1ed35e702e547
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to redirector domains, specifically advertising free game hacks and currency generators. The heuristic firings confirm these links point to known malicious infrastructure and are designed as lures. While no scripts were extracted, the document's structure and embedded URLs strongly suggest it's intended to lead the user to download potentially malicious files or engage with phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/flame-gg-free-robux-game-hack In PDF document text
    • http://wwic.wales/uploads/files/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/robux-redeem_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/how-can-i-get-every-item-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/microsoft-robux_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/how-to-get-free-robux-instructions_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/how-to-hack-roblox-games-with-scripts_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/hack-roblox-lumber-tycoon-2-fly_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/free-free-robux-robux-robux-game_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/roblox-unlimited-money-cheat_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA1 22380 bytes
SHA-256: 6639d573f50afdfd211ab6ea90f81dc0b09b9b2eecbdb6539fad711d542e73a5
font_01_sfnt_off0000617e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617E 19052 bytes
SHA-256: 0e5acbd67c2151e2d8a0f290c50b75584f3082951c962a1c817502256c0c0098