PDF malware analysis — malicious · 2a52f2119373e062

MALICIOUS

PDF

36.7 KB Created: 2021-07-20 19:22:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 1438fa2d1f06ed6c564b5e8696197651 SHA-1: bf84d2f9c6b87aebcf95bb2a78eef6c600873e5f SHA-256: 2a52f2119373e062361bd98c674baffce733091f47ababa871ca239fc3253a7d

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of free game currency or hacks. The document body explicitly mentions 'How To Get Free Robux No Scam' and includes a call to action to access a 'ROBUX GENERATOR'. The embedded URLs are designed to lead users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/431946152/how-to-get-free-robux-no-scam-game-hack In PDF document text
- http://museumkk.ru/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://museumkk.ru/images/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
- http://museumkk.ru/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
- http://museumkk.ru/images/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
- http://museumkk.ru/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- http://museumkk.ru/images/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
- http://museumkk.ru/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
- http://museumkk.ru/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
- http://museumkk.ru/images/free-robux-scams_GM431946152.pdfIn PDF document text
- http://museumkk.ru/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://www.roblox.com/.IIn 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_off00003774.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3774	23160 bytes
SHA-256: `3cc474bd73e9317959b25ce43ec13c79b062feb66b23436f5a80d49ab97a1f7e`
`font_01_sfnt_off00006b9e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B9E	18956 bytes
SHA-256: `713e7607966b9344601fee43b55a972cafbe1bcc4c86d8088e7acde4b88abf6f`

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