PDF malware analysis — malicious · 5e4c4515859df788

MALICIOUS

PDF

49.6 KB Created: 2021-06-08 20:25:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 1807830c50d9e05956829dec005c33fb SHA-1: 12cf477836e6f661cf851925c1fedd3f6f38d23c SHA-256: 5e4c4515859df788cb1faff14e2dc71baff84b7fe00fffdf106232fb99b37ccb

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and free items, impersonating PayPal to trick users into clicking malicious links. The embedded URLs, such as https://netcdn.tw/app/431946152/how-do-get-the-right-roblox-account-pin-hack-game-hack, lead to known malicious redirectors. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit user interest in free in-game currency or items, likely leading to credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

Heuristics 5

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.
Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH

Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.tw/app/431946152/how-do-get-the-right-roblox-account-pin-hack-game-hack.
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.tw/app/431946152/how-do-get-the-right-roblox-account-pin-hack-game-hack In PDF document text
- https://jdclassicautoparts.com/image/data/files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/free-tiktok-fans-hack_GM835599320.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/mcpe-com_GM479516143.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/free-robux-earn_GM431946152.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
- https://jdclassicautoparts.com/image/data/files/free-roblox-outfits_GM431946152.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_004_off000055a4.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x55A4	26592 bytes
SHA-256: `88f21a07b4d5bfa4848425bb16fba99062771e590d8668a6286317327e5c4c00`
`font_01_sfnt_off000091d5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x91D5	2844 bytes
SHA-256: `baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a`
`font_02_sfnt_off00009b97.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B97	19488 bytes
SHA-256: `8dc12226b2067d04d85ee769aa83b817065f8dbeb813d907fd5843403aea4f4f`

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