PDF malware analysis — malicious · 7b0de5cf54a0e80c

MALICIOUS

PDF

32.6 KB Created: 2021-07-01 23:47:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: ffa8f394484945818c558327d7b80436 SHA-1: 31dee595527b336882e8ce5a9ba0665a909a4c6c SHA-256: 7b0de5cf54a0e80c6f951582740b7de57df91ded7865516414df4eef92e14c69

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links that redirect to potentially malicious infrastructure, specifically promoting 'game hacks' and 'free robux'. The primary lure appears to be a link to 'http://netcdn.co/app/431946152/comment-hacker-roblox-robux-game-hack', which is flagged as a malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into downloading further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9824

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-game-hack In PDF document text
- https://luyenthitoanpro.com/public/upload/files/play-games-for-robux_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/roblox-dragon-ball-after-future-clicker-script-hack_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-500-robux_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/money-cheat-roblox-rocitizens_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-roblox-followers_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-online-games-roblox-no-download_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/lots-of-robux_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/no-pants-roblox-free_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/hack-para-tener-robux-gratis-sorteo-de-100-robux_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/how-to-earn-free-robux-2021_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/robux-free-gift-card-ord-hack_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/can-you-hack-roblox_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/roblox-rocitizen-money-hack-glitch-daily-bonus-patched_GM431946152.pdfIn PDF document text
- https://luyenthitoanpro.com/public/upload/files/free-robux-in-roblox-2021_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_off00002b1f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2B1F	21520 bytes
SHA-256: `39bc3c061f826ff9b8e9fd32df311be15f46fc3a07c8a705bd41562778e3b9da`
`font_01_sfnt_off00005a18.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5A18	19160 bytes
SHA-256: `3170af13d5b0703e45c56a7e3c5d07eb9b3ff8ec8f098abdf542e27960011cd0`

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