PDF malware analysis — malicious · af2a901827e29b78

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 12:56:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21

MD5: 3904e6f20ec905d4fbdf24f05bb8965b SHA-1: 9409399adfaabfcae4e07a0ec9a5d0f88f8923c0 SHA-256: af2a901827e29b78f7e007eed6e1b101c3e6384364e439d622d0e9dffe149b31

160 Risk Score

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-spin-coin-master-game-game-hack In PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/e-free-on-roblox_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-online-robux-generator-no-download-no-survey_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/robux-cheat_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-robux-earn_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/girl-roblox-avatar_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/hacking-roblox-jalibreak_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-robux-sin-codes_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/dayz-og-roblox-cheat-codes_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-roblox-sigh-in_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/robux-free-tips-download_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/hacks-on-roblox-grand-theft-auto_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/dragon-ball-fury-cheats-roblox_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_off0000329c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x329C	22224 bytes
SHA-256: `9ccda44b890e675c29fbd9eba799430f4ab2021f512410fa74023c7ea2f35e6b`
`font_01_sfnt_off000063c3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63C3	18432 bytes
SHA-256: `85223bd49af77d40a0092bd2c3733620e417d7d5fcdc632707b7c4feb3d04c0e`

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