PDF malware analysis — malicious · e8a0d0d8fbf1655c

MALICIOUS

PDF

45.4 KB Created: 2021-05-14 06:54:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 50edaa7769dd8f4a2708ed61eed11be4 SHA-1: 3e21c0d79bd1b9730893af8e51918da48b282d0d SHA-256: e8a0d0d8fbf1655ccc417492cc4efa0fb9a48d09f312354b7b4b4bf25b5a6489

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack lure, linking to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Pig Master Free Coins And Spins' and a URL that aligns with the lure. The embedded URL is likely intended to lead the user to a malicious site for further exploitation or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9507

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.xyz/app/406889139/pig-master-free-coins-and-spins-game-hack In PDF document text
- https://linhkien247.vn/public/upload/files/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/freecoins_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/coin-master-link_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/roblox-free-models_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/best-free-roblox-executor_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/roblox-but_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004b24.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B24	25524 bytes
SHA-256: `f8bac511cf15e87ef31af97b564cd49999afd8c95d167e306a8eb2146bd3b8be`
`font_01_sfnt_off000084b3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84B3	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00008e65.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E65	18504 bytes
SHA-256: `61a83f927df5edb9f478f7ef694b2c9e4338115fc73db665eb245c70cf9f9e5c`

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