PDF malware analysis — malicious · 5465c9ae4c3d6af7

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 23:37:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: c10e998f33d0d7dd1ef5e6844f082fff SHA-1: f8ec542599c84474f64ae1980dc4054106d6d8cc SHA-256: 5465c9ae4c3d6af788b0dd2faa647e218a55cfd2981d5c8790e12563cf80ce33

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to a malicious domain, masquerading as a generator for free game currency or hacks. The heuristic firings indicate the PDF is designed to lure users into clicking these links, which are associated with known malicious redirector infrastructure. No scripts were extracted, but the document's content and embedded links strongly suggest a phishing or scam attempt.

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-robux-no-virus-game-hack In PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-robux-no-human-verification-2021-ipad_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-codes_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/hack-minecraft_GM479516143.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/coin-master-hack-game-download-ios_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/execute-freerobux_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/top-10-mejores-hacks-para-roblox_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/robux-hack_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-robux-generator-hack-best-voulu_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/roblox-robux-hack-tool-2021_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/roblox-jojo-cheat-engine_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/roblox-dragonball-online-adventures-cheats_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/ricegum-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-robux-generator-2021-no-human-verification_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_off0000324c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x324C	22088 bytes
SHA-256: `41b432f4cbf36fe255a0e55edb7f4dcd5df7e54be9cb3edf1e1b4f8eb2f20c7e`
`font_01_sfnt_off00006336.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6336	18972 bytes
SHA-256: `38a5c3ecc6c7e5c354a248746c999355a79eca0280a9460b9bf2ef418f8d0382`

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