PDF malware analysis — malicious · b90e55cc1786000a

MALICIOUS

PDF

34.8 KB Created: 2021-06-23 15:07:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: a5e2cf1c459264449d7fa8c8b4437e02 SHA-1: 40fdaacf000369d48e0629cfdbb9d37915359c9a SHA-256: b90e55cc1786000a8a39d68d3186786ae6ae990d1fd67baec9bae15d1718e87b

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, masquerading as free game hacks and generators. The primary lure URL is http://netcdn.co/app/431946152/free-printable-roblox-cupcake-toppers-game-hack. The document body and heuristics indicate a social engineering tactic to trick users into visiting these malicious sites, likely for further payload delivery or credential harvesting.

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/free-printable-roblox-cupcake-toppers-game-hack In PDF document text
- https://www.wessexandrology.com/uploads/files/files/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/free-on-roblox_GM431946152.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/cheat-engine-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/roblox-best-hack-for-apocalypse-rising-2021_GM431946152.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/roblox-cheat-codes-android_GM431946152.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/pokemon-go-free-remote-raid-pass-february-2021_GM1094591345.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/how-to-get-free-robux-easy-way-2021_GM431946152.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/how-to-hack-roblox-accounts-using-roblosecurity_GM431946152.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/roblox-gang_GM431946152.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
- https://www.wessexandrology.com/uploads/files/files/chisel-and-bits-mod-minecraft-pe_GM479516143.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_off00002f12.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F12	22572 bytes
SHA-256: `209fcb3e157af7976e70c49d284295830eebdf938824dcd2a846797023026b11`
`font_01_sfnt_off000061ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61BA	19516 bytes
SHA-256: `3b9fd9619a3d8b37133aff22fd2a1a0167781815b37c5e109522141c4cbf333a`

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