PDF malware analysis — malicious · 6d3befb628985a8c

MALICIOUS

PDF

38.1 KB Created: 2021-05-30 07:06:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 79c0a4799e8873d4ccc819985ae707ae SHA-1: 3fe6d0737919b298170f869d6508b4f439c0a0b6 SHA-256: 6d3befb628985a8c523c250bbca49abacfc04001085d0e3a1f4ae6422390203e

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game items and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector, which likely serves further malicious content or downloads. The document body and embedded URLs confirm this redirection-based attack pattern, aiming to exploit user interest in popular games and online services.

Machine Learning

Nyx PDF Classifier malicious score 0.9978

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/479516143/minecraft-skins-free-girl-game-hack In PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/free-coin-master-coins_GM406889139.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/freer-pro-tiktok_GM835599320.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/free-100-robux_GM431946152.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/robux-hack-tools_GM431946152.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/master-coin-free-spin_GM406889139.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
- https://indonga.com.vn/wp-content/uploads/fsqm-files/free-robux-obby_GM431946152.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_off00003bbb.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3BBB	25428 bytes
SHA-256: `0640603c8e89cd9853bd2dfc7d2f41847e8ce02e1d2890e3b403cb6e4e0bc56c`
`font_01_sfnt_off00007509.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7509	17812 bytes
SHA-256: `7ce5d1bffc067a7697c6659b9f16d2693dfb8cdcb2edfb00fbdf7ce9282af41c`

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