PDF malware analysis — malicious · 76677510507aad5f

MALICIOUS

PDF

41.2 KB Created: 2021-05-14 08:00:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: c9a6ad0ab034472c5b41532f6cee6c50 SHA-1: cff4b3a6a2690c2955de944feb8429520f7fec15 SHA-256: 76677510507aad5f354a57785d3b6049c45c2d7eb8c887b08a2f09cd61bcb132

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-spin-game-hack PDF link annotation
- http://www.dallahgrp.com/uploaded_files/userfiles/files/minecraft-app-store-free_GM479516143.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-unlimited-robux_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/games-for-robux_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-robux-reddit_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-robux-script_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/roblox-source_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/coin-master-tips_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/coin-master-apk-hack-mod-download_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
`stream_003_off0000494e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x494E	24464 bytes
SHA-256: `9f2d08ebbcfcc916f8f4f345cdd4fc5e08e6d070c7c79483a0acc768da4ba01e`
`font_01_sfnt_off00008178.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8178	17392 bytes
SHA-256: `26961c9f14d61c789be320ef33f793128d7856b3f2b2e22dee8a483f9b6c2997`

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