PDF malware analysis — malicious · 2bf21751393a77e2

MALICIOUS

PDF

35.3 KB Created: 2021-07-07 02:41:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 0fc8d3948aa4f4a708df98b56da91211 SHA-1: 2147da8d004ba011d74ca3da5d2c84f4c915f2bc SHA-256: 2bf21751393a77e2ca54e57562bcfef0563e38992d47f92b65a33e6e45ac6a39

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, with a high-confidence heuristic indicating a lure for game hacks and free generators. The document body and extracted URLs reinforce this theme, suggesting a phishing or scam attempt to redirect users to potentially malicious sites. No scripts were extracted, but the primary attack pattern involves social engineering through fake offers.

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/games-on-roblox-that-give-you-free-robux-game-hack PDF link annotation
- http://bepquannhu.vn/upload/editor/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-gift-card-roblox-codes-2021-list_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/getrobux-come_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-cash-roblox-pizza-place_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-roblox-accounts-to-use_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/get-me-free-robux_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-clothes-roblox-hack_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/roblox-if-you-got-hacked_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-admin-in-roblox_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/how-to-hack-roblox-to-get-robux-2021_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-robux-bc-claims-and-generators_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/robux-no-human-verification_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/hack-roblox-jailbreak-noclip_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/minecraft-free-computer-game_GM479516143.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_off00003212.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3212	22256 bytes
SHA-256: `8d0249fda7b1cce4ba6db449d182a0efee73b0e32bc1ba5a69a32bb0485bcbed`
`font_01_sfnt_off0000631f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x631F	19716 bytes
SHA-256: `3217d2b45e6aba390097db31ed4f489c97a69b2175e2ab7441deb7edbbce2f2f`

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