Malicious PDF — malware analysis report

Static analysis result for SHA-256 b05eedbbc2387df3…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 12:37:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ad5d9e5fc3d642568721f1d0f12cf575 SHA-1: bced8836a5b75bc522c992e76bacba69f1eb970a SHA-256: b05eedbbc2387df39a7ad66a097afe20cd6d37cabbff92cf13fa6065f4015db9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to a known malicious redirector, specifically designed to lure users with promises of free game currency or hacks. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting. No scripts were extracted from this sample.

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/free-robux-com-2021-game-hack In PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-robux-for-account_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/give-me-free-roblox_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/how-to-hack-dragon-ball-z-revalations-roblox_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-robux-link_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-anime-t-shirt-roblox-adidas_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/roblox-framed-hack_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/free-games-for-robux_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearningmtsn33jkt.net/__statics/gudangsoal/files/how-to-actually-get-free-robux_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_off000030c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C7 21496 bytes
SHA-256: b26157ad475a38401ec2d27bbed1217d989c12a913d41328f057547aa7dc2517
font_01_sfnt_off00005fe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE9 19380 bytes
SHA-256: e4a3050f3e501d111e2505792e6fe17b213487e8f387ded0c09bd9d126917491

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