PDF malware analysis — malicious · 8c6bb414d5be2c9a

MALICIOUS

PDF

37.7 KB Created: 2021-07-07 01:58:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 1fa0d8f84dd65977cfc6fe3a345e7f1f SHA-1: d2976780cd8b7526aa6d334682e40eeb131217a1 SHA-256: 8c6bb414d5be2c9a473bf73d7a90810618ea50f3e6930ded56dc131be64cf1cc

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 0.9981

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/roblox-images-game-hack PDF link annotation
- https://goodtools.tw/upload/files/coin-master-mod_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
- https://goodtools.tw/upload/files/cheats-to-get-cars-in-car-crashers-2-roblox_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-to-hack-someone-in-roblox-on-ipad_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/pokemon-go-free-pokecoins_GM1094591345.pdfIn PDF document text
- https://goodtools.tw/upload/files/cheat-roblox-2021-la-dernier-misajoure_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/roblox-assassin_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-do-i-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-offers-for-robux_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/www-free-robux-com_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-to-get-fast-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-account-roblox-passebin_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/hack-fly-roblox-2021-may_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-robux-script_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-roblox-redeem-codes-not-used_GM431946152.pdfIn PDF document text
- https://www.roblox.com/.IIn 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_off00003db9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3DB9	22356 bytes
SHA-256: `88299de8b5419673a7608199c39e7bb37f09f587420e3f8690a6ce768daba602`
`font_01_sfnt_off00006f3f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F3F	18748 bytes
SHA-256: `bf47317ac3eb75c41d6e114fad8eb749f701cb38c6048cbe79b2f4a9a3dcbfc0`

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