PDF malware analysis — malicious · cd50d4b406fde4c2

MALICIOUS

PDF

37.7 KB Created: 2021-07-05 01:01:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 0daf57670cb17236fd0f874df63cdd1e SHA-1: 249177a308280b16427ef501fa85166f17d0ed5c SHA-256: cd50d4b406fde4c266470da08cb7561b99df20c3cd90e4cf4eb88947970cca23

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, that lure users to websites offering game hacks and generators. The document body and embedded URLs suggest a phishing attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of embedded URLs and the nature of the lures strongly indicate a malicious intent to redirect users to malicious infrastructure.

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/coin-master-free-500-spins-link-game-hack In PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/hack-game-coin-master_GM406889139.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/roblox-hack-me_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/get-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/free-robux-hack-generator-2021_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/download-tiktok-for-free_GM835599320.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/roblox-phantom-forces-aimbot-hack-download_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/roblox-muder-mystery-how-to-get-godly-for-free_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/coin-master-hack-android-no-root_GM406889139.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/free-robux-today_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/coin-master-app-hacks_GM406889139.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/free-roblox-account-2021_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/coin-master-free-box_GM406889139.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.alamrayabali.com/assets/CKImages/files/minecraft-auto-miner-hack_GM479516143.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_002_off000038dc.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x38DC	23996 bytes
SHA-256: `c55a05223f33dfdffcc757862947944f37bde7170f127c178fa0eb93be61a0b7`
`font_01_sfnt_off00006f8e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F8E	18648 bytes
SHA-256: `1636fb23a6cd8f0d5f85ca79345040006fb6e4a190c98cb46e349296b15a9610`

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