PDF malware analysis — malicious · f3807330d82a07ee

MALICIOUS

PDF

34.2 KB Created: 2021-07-07 06:56:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 2dfa07f66a339c3d3aa72a6ba8370aab SHA-1: 7ee884824fb4d9357963152ecebe50e7d59b39ca SHA-256: f3807330d82a07eee58582cca3c989c63fbf9a50f2ed7f106b8df9f3c7422d96

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/479516143/minecraft-images-free-game-hack PDF link annotation
- https://www.skygan.com/uploaded_files/userfiles/files/ways-to-earn-robux_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/how-to-bypass-cheat-engine-64-on-roblox_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-roblox-no-virus_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/roblox-making-hacker-smilator-wild-west_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/roblox-builders-club-free_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-robux-giftcard-may-2021_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/roblox-vehicler-simulator-afk-money-hack_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/www-roblox-com-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_off0000318d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x318D	22620 bytes
SHA-256: `3c5be43209f39d6a9644ab2d54ac969666723d7d4ffeff5a979233660ba5d347`
`font_01_sfnt_off000063b0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63B0	18116 bytes
SHA-256: `76604dd5740139514d3fd46c2a9d9c838f52c59b348f00b4ee9f07d20b77a693`

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