Malicious PDF — malware analysis report

Static analysis result for SHA-256 2796cfc5b28a1dc6…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 12:45:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c49b95629b6c9000cade2fe91ee44fb3 SHA-1: 754f8cd46579708e7fb66f4ff86f90486b8eb85c SHA-256: 2796cfc5b28a1dc6ec87878dede19299e8c705bca11d9655cec0e306a7e4ad70
160 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting game hacks and free currency generators. The primary lure is the URL http://netcdn.tw/app/406889139/free-coin-master-spins-2021-game-hack, which is flagged as a known malicious redirector. This suggests the document is designed to trick users into visiting potentially harmful sites, likely as part of a phishing or malware distribution scheme.

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/406889139/free-coin-master-spins-2021-game-hack In PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/coin-master-home_GM406889139.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/roblox-fisticuffs-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/what-is-wurst_GM479516143.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/free-hoverboard-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/tycoon-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/how-to-hack-in-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/how-can-u-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/robux-website_GM431946152.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • https://e-learning.man2-kotapadang.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-gift-cards_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
stream_002_off0000334f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x334F 22508 bytes
SHA-256: 22a5261851e1ef5e74a2dd7c4fdfe7cf9b285d0363b4366a2fa9ce2c7653a332
font_01_sfnt_off00006588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6588 18576 bytes
SHA-256: b91ca07aeadef02c4833a5be8b217bc3af90c6c550000b8c217b6d13a7f4cb5d

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