PDF malware analysis — malicious · 4da868a3fd7b98c7

MALICIOUS

PDF

43.1 KB Created: 2021-05-19 06:01:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 78247092afde3d5bb9b84e37659700a0 SHA-1: 08bbbf87cc92f84f14184e9814475eba68d46fa0 SHA-256: 4da868a3fd7b98c78e6db3f769dd06ed84ee15e2aaac4596a59ca215b93ea017

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 5

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.
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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/479516143/wurst-commands-game-hack PDF link annotation
- https://hekl-software.de/images/what-is-a-robux_GM431946152.pdfIn PDF document text
- https://hekl-software.de/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://hekl-software.de/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- https://hekl-software.de/images/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
- https://hekl-software.de/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://hekl-software.de/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
- https://hekl-software.de/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
- https://hekl-software.de/images/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
- https://hekl-software.de/images/coin-master-jackpot-hack_GM406889139.pdfIn PDF document text
- https://hekl-software.de/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://hekl-software.de/images/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
- https://hekl-software.de/images/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
- https://hekl-software.de/images/free-games-like-roblox_GM431946152.pdfIn PDF document text
- https://hekl-software.de/images/master-coin-hack-app_GM406889139.pdfIn PDF document text
- https://hekl-software.de/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
- https://hekl-software.de/images/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
- https://hekl-software.de/images/robux-com-free_GM431946152.pdfIn PDF document text
- https://hekl-software.de/images/free-robux-discord-servers_GM431946152.pdfIn PDF document text
- https://hekl-software.de/images/free-robux-place_GM431946152.pdfIn PDF document text
- https://hekl-software.de/images/free-robux-kid-friendly-no-human-verification_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_off00004caa.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CAA	25036 bytes
SHA-256: `f02721c53fee677059b04d03185fd418d3773c4e4c234f019e267b0bb15a9999`
`font_01_sfnt_off00008625.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8625	18360 bytes
SHA-256: `82af6130b976e7e3d57b752dfdf53cbe312851006f14cbe873ba02022738eb83`

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