PDF malware analysis — malicious · c82dc3211f9d55a0

MALICIOUS

PDF

35.4 KB Created: 2021-06-18 18:46:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: c6990540ddc5b907a4a782fc8c8657ae SHA-1: de537953c78293558016e6579020713002dd1022 SHA-256: c82dc3211f9d55a03e89e5d14a3dec4d9ee3f17ef349b37e1c02044a9583a9f9

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary malicious URL identified is http://netcdn.co/app/431946152/comment-hacker-roblox-robux-tuto-2021-game-hack. The document body and embedded URLs suggest a social engineering lure to trick users into visiting these sites, likely for further malware delivery or phishing. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/comment-hacker-roblox-robux-tuto-2021-game-hack In PDF document text
- https://www.woundcare-today.com/uploads/files/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/fast-robux-online_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/pokemon-go-free-zekrom-counters_GM1094591345.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/roblox-apocalypse-rising-hack-september-2021_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/speed-hack-roblox-script-pastebin_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/rbx-earn_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/how-to-get-free-infinite-robux_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/roblox-administrator-badge-hack_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/pokemon-go-free-or-not_GM1094591345.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/minecraft-free_GM479516143.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.woundcare-today.com/uploads/files/files/how-to-o-get-free-coin-master-spins_GM406889139.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_off0000336c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x336C	21956 bytes
SHA-256: `9adc60255e2bcf113e933bcf04f7d0e1f7aa8799b67d5db480f41ba0fb8fc223`
`font_01_sfnt_off000063ec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63EC	19564 bytes
SHA-256: `c6387caea59cffb63df58fe7ba4a2770b4017d07a5e1a9061e378f0e957326f9`

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