PDF malware analysis — malicious · 53daa539afbd2904

MALICIOUS

PDF

35.3 KB Created: 2021-06-25 06:40:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 86891e510742c4138e8ce7e7683cd440 SHA-1: df4b40083c65be2f41be9529d6dba31c3ee8d0d0 SHA-256: 53daa539afbd29040c796fa74698668cfffbf47ed5d6f756f54991e1a58a07f1

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one identified as a malicious redirector, that promise free game hacks and currency. The primary link, http://netcdn.co/app/431946152/where-to-put-code-for-free-roblox-game-hack, is designed to lure users into clicking through to potentially harmful content. The presence of a download button lure further supports the malicious intent of this document.

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/where-to-put-code-for-free-roblox-game-hack In PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/roblox-gfx-render-free-to-use_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/robux-hack-generator_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/free-roblox-high-school-2-promo-codes_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/free-minecraft-skins_GM479516143.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/roblox-robux-free-bc_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/ulgamesresourcescom-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/free-shovocado-roblox_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/hacks-da-hood-roblox_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/hackeando-los-ordenadores-en-roblox-derank_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/how-to-get-1-billion-free-robux_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/cch-ly-robux-free-ko-hack-2021_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/roblox-dragon-ball-fury-cheat-engine_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/how-do-you-get-a-lot-of-robux-for-free_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/free-robux-100-life-free-for-roblox-pinteres_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-fake-card_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/retail-tycoon-hack-roblox_GM431946152.pdfIn PDF document text
- https://brsolutions.pl/wp-content/uploads/fsqm-files/roblox-backgrounds-its-free_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_off00003101.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3101	22644 bytes
SHA-256: `2234d7c1cadd5f4df3543767862dfae262b2bfd807bd83b188fd1ac03d25a50d`
`font_01_sfnt_off0000638e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x638E	19588 bytes
SHA-256: `e65c12908be6887c4662f69ad03ccc9b7a1d525f51ac12eeaf0d46ef8da68782`

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