PDF malware analysis — malicious · c43c020f4b2de668

MALICIOUS

PDF

41.7 KB Created: 2021-05-11 23:31:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 10ec82f9ab3a9646a049d0dba42fbff2 SHA-1: 50e4240b98ff35e1cea820a944b68be98e135b86 SHA-256: c43c020f4b2de668db8af264c4281810c157b7ba815882d27624efe6cb788fc0

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 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-free-fire-game-hack PDF link annotation
- http://rivas-treuhand.ch/images/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
- http://rivas-treuhand.ch/images/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
- http://rivas-treuhand.ch/images/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
- http://rivas-treuhand.ch/images/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
- http://rivas-treuhand.ch/images/coin-master-reward-link_GM406889139.pdfIn PDF document text
- http://rivas-treuhand.ch/images/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
- http://rivas-treuhand.ch/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
- http://rivas-treuhand.ch/images/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- http://rivas-treuhand.ch/images/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
- http://rivas-treuhand.ch/images/roblox-free-pets_GM431946152.pdfIn PDF document text
- http://rivas-treuhand.ch/images/www-robux-redeem_GM431946152.pdfIn PDF document text
- http://rivas-treuhand.ch/images/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
- http://rivas-treuhand.ch/images/heroes-online-roblox_GM431946152.pdfIn PDF document text
- http://rivas-treuhand.ch/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
- http://rivas-treuhand.ch/images/free-robux-website_GM431946152.pdfIn PDF document text
- http://rivas-treuhand.ch/images/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
- http://rivas-treuhand.ch/images/robux-rewards_GM431946152.pdfIn PDF document text
- http://rivas-treuhand.ch/images/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
- http://rivas-treuhand.ch/images/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- http://rivas-treuhand.ch/images/free-robux-generator-no-human-verification-or-survey-2021_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
`stream_003_off000048ad.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48AD	25288 bytes
SHA-256: `b2b3f93513e266c63d6313cb5b64a77d4bf22f531b7885748792c76a6a6fd7ea`
`font_01_sfnt_off0000825d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x825D	17712 bytes
SHA-256: `0afd6f2792edb83b7f2a0201a1e0a5eb12ca81ad868fb3e42742340ee6e5fb0e`

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