PDF malware analysis — malicious · f22b815d78381c75

MALICIOUS

PDF

34.8 KB Created: 2021-06-26 07:48:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: e305b724185c6d3adf0ee41be76d962e SHA-1: f94934c48296f4cf8d626d2d11517f6524e88e22 SHA-256: f22b815d78381c75f5875c526b3f91d4d55265cc404a09099bf993606d0d0669

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free game hacks' and currency for popular online games. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple redirector links indicates a phishing or scam attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a lure to a potentially harmful website.

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/new-account-roblox-free-game-hack In PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-no-human-verification-robux_GM431946152.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/roblox-pets-for-free_GM431946152.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/roblox-summoner-tycoon-cheats_GM431946152.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/one-piece-nightfall-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/minecraft-net-free_GM479516143.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-robux-accounts_GM431946152.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-roblox-users-with-robux-live_GM431946152.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-cool-tshirt-roblox_GM431946152.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-free-robux-code_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_off00003149.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3149	22204 bytes
SHA-256: `a89995b71cda0ee4b9e06620802747e8af06a32040135c80061ae756221ddfbf`
`font_01_sfnt_off000062ae.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62AE	19056 bytes
SHA-256: `4c2cb885183dbc9cacf3d241da0a613dc29b20ce4cfe5b40877b2bfea57c0c6f`

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