PDF malware analysis — malicious · 8b4e8ab540c7f124

MALICIOUS

PDF

44.8 KB Created: 2021-06-02 00:16:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 6b44d1545dfe3e8309d1874460b46707 SHA-1: 572f2b73698542499c54a43a8b29869ce3ae8f62 SHA-256: 8b4e8ab540c7f12431b9de06c788eb65947ce03fb7ad607469a73808f7c8107a

208 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains embedded links that redirect to malicious infrastructure, masquerading as a 'free generator' or 'game hack'. The document body and heuristics indicate a lure designed to trick users into a fake CAPTCHA or human verification prompt, likely to download further malware or engage in credential harvesting. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-to-get-free-hats-for-free-no-inspect-roblox-game-hack.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

Heuristics 6

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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/431946152/how-to-get-free-hats-for-free-no-inspect-roblox-game-hack In PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/free-robux-master_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/roblox-cheats-com_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/free-group-funds-roblox_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/minecraft-java-free_GM479516143.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/how-to-use-cheat-engine-on-roblox-without-shutdown-2021_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/hacks-para-roblox-gratis_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/roblox-phantom-forces-hack-script-pastebin_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/free-promocode-that-gives-you-750-000-robux_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/free-robux-come_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/how-to-hack-someone-on-roblox-with-google-chrome_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/toy-codes-roblox-free_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/free-sprite-shirt-roblox_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/roblox-hack-mod-windows-7_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/roblox-the-hunger-games-cheats_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/rbl-robux-gives-roblox-hack_GM431946152.pdfIn PDF document text
- https://ths-academy.net/wp-content/uploads/fsqm-files/roblox-arsenal-hack-script-pastebin_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_004_off00005366.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5366	24400 bytes
SHA-256: `251e113d400a7914a17824f13d79172e527364582360efe23fbfdeb62e83682a`
`font_01_sfnt_off00008b72.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B72	18620 bytes
SHA-256: `b4a27858ba86f92bf69c8ff7b23e2d44bacecda015809df1378f06cb211df2c7`

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