Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ccf245ce4a6c319…

MALICIOUS

PDF

34.9 KB Created: 2021-06-30 07:07:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4d74868f4ba07d29c9b82309c3b28a58 SHA-1: bb224902d2e6ce71cae363cb561acfd9d7e1bddf SHA-256: 6ccf245ce4a6c319bbaf49688271483a9de8d3e8a0fd4f0afc6a8d5716b99f71
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors and websites promising free in-game currency or hacks, indicating a lure for users to visit potentially harmful sites. The ML classifier and specific PDF heuristics strongly suggest malicious intent, likely to deliver a second-stage payload or conduct phishing. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of compromise.

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.co/app/431946152/como-ser-hacker-en-roblox-2021-game-hack In PDF document text
    • http://elib.acls-indonesia.com/repository/free-robux-no-very_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/unlimited-robux-level-hack_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/can-i-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-rich-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-jailbreak-2021-btools-hack_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/robux-no-survey_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-hack-on-roblox-in-3-simple-steps_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/island-royale-roblox-hack-esp-script_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-free-robux-hack-apk_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_off00003159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3159 22252 bytes
SHA-256: e6b255dd4d1f7c34cd06e92cc8d7848b4411b1a059ddddc6d40975e70036fcc3
font_01_sfnt_off0000628e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628E 19320 bytes
SHA-256: 1343575e2f8114d30b6cd4e76a227344f8e0d2628bc586afd3b0d5c50f379b52

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