PDF malware analysis — malicious · 34b0e23fd74d4273

MALICIOUS

PDF

35.6 KB Created: 2021-07-04 17:21:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 15046f634848bae21d166c21139cfe83 SHA-1: d06700a453ffde975b8c76fb60c402291dc79e2f SHA-256: 34b0e23fd74d42738863e259ddab7432bc04d8ff6b05be49dcb308845fea4429

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document employs a lure related to hacking Roblox accounts to trick users into clicking a malicious URL. The primary URL identified is http://netcdn.tw/app/431946152/how-to-hack-roblox-accounts-2021-easy-game-hack, which is likely a redirector to a malicious site or a download. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

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.
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 http://netcdn.tw/app/431946152/how-to-hack-roblox-accounts-2021-easy-game-hack PDF link annotation
- https://www.mierepair.com/uploaded_files/userfiles/files/unpatchable-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/robux-earning-sites_GM431946152.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/fbchampion-com_GM406889139.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/10m-8-7m-17-free-robux-daily-robuxian_GM431946152.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/coin-master-game-hunter_GM406889139.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/free-robux-hack-easy-and-fast_GM431946152.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/free-roblox-tix-generator_GM431946152.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/free-robux-card-giveaway_GM431946152.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/roblox-ticket-cheat-engine_GM431946152.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/did-roblox-get-hacked_GM431946152.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
- https://www.mierepair.com/uploaded_files/userfiles/files/future-free-roblox-exploit_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
`font_00_sfnt_off0000332a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x332A	22212 bytes
SHA-256: `ed32060743a734632900b792fbb5f789882d3936892e1aa823b5d53e6b07d895`
`font_01_sfnt_off00006428.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6428	19644 bytes
SHA-256: `282628fc42a96e3279200ec8779d80ae4dcbec71e777bf135841d81b8694e155`

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