PDF malware analysis — malicious · 8b483990db2c750b

MALICIOUS

PDF

34.6 KB Created: 2021-07-07 23:01:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 3748ec193337c9a3e09d2004bda82274 SHA-1: b6b9bec1e0ac2249b0fb2ecae057238f703201dc SHA-256: 8b483990db2c750b449058ce0dfb70ac6dcd9cf0adab9ac7792dd0ce030265ad

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to known malicious infrastructure, specifically a site offering game hacks and free spins. The document body and heuristics indicate a lure for users to click these links, likely leading to further malicious content or downloads. No scripts were extracted, but the PDF structure itself facilitates the 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.tw/app/406889139/free-spins-coin-master-links-twitter-game-hack In PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/roblox-private-jet-free_GM431946152.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/spin-and-coin-link_GM406889139.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/fly-hack-roblox-no-cheat-engine-any-games_GM431946152.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/hack-beta-forces-phantom-roblox_GM431946152.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/free-robux-earn_GM431946152.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/free-bc-tbc-obc-and-robux_GM431946152.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/i-will-give-you-a-free-roblox-gift-card_GM431946152.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/auto-runner-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/level-coin_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_off00003131.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3131	22568 bytes
SHA-256: `b3c8c2546355189717b94334ac9023ff985e2e56432b0218d15d8d2886355e75`
`font_01_sfnt_off000063a7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63A7	18508 bytes
SHA-256: `adfc4c9c74a5723feb576ed9a9dfa30514232c205950fc9bbab50c5bab32bb09`

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