PDF malware analysis — malicious · 58fb71b2c817f55a

MALICIOUS

PDF

46.7 KB Created: 2021-06-07 04:14:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: ca448703fb2743d952d266bef49fd3a4 SHA-1: c488285066e4accaccd6acc0fb838c96fe00935a SHA-256: 58fb71b2c817f55ab360fc974d40162e23d55ee2cdb19a7618243a3b97632a2c

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links to external websites, with a primary URL pointing to a 'pastebin-roblox-hack-robux-game-hack' page. Heuristics indicate the document uses a 'game hack' lure and a 'browser extension/update installation' lure to trick users. This suggests the document is designed to lead users to download malicious content or install unwanted software, likely as part of a phishing or social engineering campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9832

Heuristics 5

PDF links to a 'free generator / game hack' redirector high 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.
Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE

Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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
External URI info PDF_URI

PDF contains an external URL action
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/pastebin-roblox-hack-robux-game-hack PDF link annotation
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-island-royale-cheat_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-robux-hack-online-generator-tool_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/test-your-own-roblox-shirt-for-free_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/robux-get-free-robux_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-pet-ranch-cheats_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/how-to-hack-get-crushed-by-a-speeding-wall-roblox_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-phantom-forces-cheats-2021_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/free-robux-for-ads_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/cheat-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/cheat-dragon-ball-rage-roblox_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/free-400-robux-promocode_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/earn-free-robux_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/free-robux-download-no-survey_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/free-minecraft-capes_GM479516143.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/download-fly-hack-on-roblox-vampire-hunters_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/minecraft-free-install_GM479516143.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-chrome-extension-hack_GM431946152.pdfIn PDF document text
- https://tangthuphathoc.net/wp-content/uploads/fsqm-files/free-robux-exe_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_off0000529b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x529B	27696 bytes
SHA-256: `2a2f1e1d149d339b9049bf599a5a203fe260e25366e5492286d4461656510c6d`
`font_01_sfnt_off00009303.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9303	18700 bytes
SHA-256: `03f5f30da67f8b048a25174d8ffa4c21e0535e169af7d78a7cadac3519b8cb6a`

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