PDF malware analysis — malicious · 1d416e78bcfe76dc

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 21:19:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 442c3db0a843931d54144d8292864381 SHA-1: 6388213e5c85f97009d8ab10b7fea616ed1ae795 SHA-256: 1d416e78bcfe76dc133707e5a9bb7956c0e2690b77401072fef9cd0da7682e23

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.co/app/431946152/free-robux-roblox-promo-codes-game-hack PDF link annotation
- https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-hack-into-games-on-roblox_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-robux-in-meepcity-2021_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-free-daily-spins-today_GM406889139.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_off00002fdf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FDF	21740 bytes
SHA-256: `eb94a719c89efa1c03699bc5222d1b571ec92c5de177edd5bc21c7fac978cbb2`
`font_01_sfnt_off00005f84.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F84	19380 bytes
SHA-256: `a452d0c191873ed4d1cd88fa82656ca938fba3e74f496bef56901f9d10460b65`

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