PDF malware analysis — malicious · c62f779c83625ffe

MALICIOUS

PDF

46.8 KB Created: 2021-06-03 13:30:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: a63ffd35f4ac3510b35329713c88a44d SHA-1: 0974c02fe91b5c017ff2f92ed37579cdca22ac58 SHA-256: c62f779c83625ffe099b7c2ec53d205934c56947da940078d3cca03f502d1be5

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them, disguised as "free generators" or "game hacks". The primary link redirects to a known malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious redirection workflow, likely intended to lead users to credential harvesting pages or further malware downloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.online/app/431946152/free-roblox-accounts-with-robux-that-work-2021-game-hack In PDF document text
- https://www.armera.co.uk/uploads/files/files/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/real-roblox_GM431946152.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/minecraft-free-trial_GM479516143.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/free-robux-codes_GM431946152.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
- https://www.armera.co.uk/uploads/files/files/free-robux-without-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
`stream_004_off00005584.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5584	25776 bytes
SHA-256: `14703ebffad92b8e677d6e2797b519e945b1a32d5c0690894cbad1cb52c0c8f0`
`font_01_sfnt_off000090fe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x90FE	19476 bytes
SHA-256: `4c7cb67921980cc467a624d7be0aa4f8f19dcdcb8d4cb789adc94de6f70366aa`

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