PDF malware analysis — malicious · 3f4166ddd9e8f604

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 02:50:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 704f00033deb5b7adb2fa5f36c5649f6 SHA-1: c9474284a80703adca1ebe14f16bf700fa2a368e SHA-256: 3f4166ddd9e8f60461d46c6431e95bf47c89a8a24d2bfbf0fc02da392511e96a

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free in-game currency and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector, likely serving as a gateway to further malicious content or malware. The document body and embedded URLs reinforce this phishing pretext, aiming to exploit user interest in popular games.

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/stock-speed-coin-master-free-spins-game-hack In PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/free-roblox-accounts-2021-with-obc_GM431946152.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/mad-city-roblox-cheat-script_GM431946152.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/robux-online_GM431946152.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/ben-10-cheats-roblox_GM431946152.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/roblox-hack-com_GM431946152.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/roblox-games-that-you-can-play-online-for-free_GM431946152.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/how-to-get-free-robux-change_GM431946152.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/coin-master-game-free-download_GM406889139.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/hack-tool-roblox-2021_GM431946152.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/how-to-get-more-robux-for-free-2021_GM431946152.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/free-4-now-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.

Filename	Kind	Source	Size
`font_00_sfnt_off000031c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31C2	22676 bytes
SHA-256: `d88e4603913786c0f5bc506cbf4325152e5661a96fe26bd80c4044b46838ee8b`
`font_01_sfnt_off0000643d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x643D	18520 bytes
SHA-256: `a519bba55fcd2911d38b75876f0299d704b9845a8a755fb00f2a104f1f940b93`

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