PDF malware analysis — malicious · c948855f9cbf0703

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 06:21:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: df67c397592c6bfd5a907744cd54f4be SHA-1: ce94feaf22056e10d7690c68353367e8b32c8d5f SHA-256: c948855f9cbf070342ab09e3ce1f8e2c6115e97ecbd3c5c5816093bc8fa7e409

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text referencing game hacks and free currency for popular games like Roblox and Coin Master. The primary link, http://netcdn.tw/app/431946152/how-to-get-roblox-premium-for-free-game-hack, is flagged as a lure for game hacks. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious intent to redirect users to potentially harmful websites, likely for credential harvesting or malware distribution.

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-get-roblox-premium-for-free-game-hack PDF link annotation
- http://www.sourceit.llc/uploaded_files/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/how-to-get-free-robux-earnrobux-today_GM431946152.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/roblox-hack-scripts-for-jailbreak_GM431946152.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/roblox-pjj-hacks_GM431946152.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/how-to-get-free-limiteds-on-roblox_GM431946152.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/how-do-i-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/god-roblox-hack-script-fe_GM431946152.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/inject-hack-roblox-code_GM431946152.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/robux-for-offers_GM431946152.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/roblox-freeze-tag-hack_GM431946152.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/roblox-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/coin-master-free_GM406889139.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/free-roblox-card-numbers_GM431946152.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
- http://www.sourceit.llc/uploaded_files/userfiles/files/gamingwithkev-free-robux_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_off000030b8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30B8	22480 bytes
SHA-256: `2abd5d4c824006cc8eb7f3a048b8f57d5799fb9eb2014d198e3ed809c56e9613`
`font_01_sfnt_off000062b2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62B2	19592 bytes
SHA-256: `700e86d9e9945eaf1801824d97f7a99f88438ba1c5c62b344f352fefc119caa5`

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