PDF malware analysis — malicious · 0413c34630cbb8db

MALICIOUS

PDF

35.1 KB Created: 2021-06-25 20:42:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 3b4e1d6df47fa2b6243a29386cdc38b4 SHA-1: bb3682208fda5a251a57fdb57215fb1e9c4c762c SHA-256: 0413c34630cbb8db5e2a966bcf1076ac644c600fdae64980ad3fd0d85d5bdb1d

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document employs social engineering by presenting itself as a hack or cheat for popular games like Roblox and Coin Master, aiming to trick users into downloading malicious files. The presence of embedded URLs and the 'Browser Install Lure' heuristic strongly suggest the document's intent is to facilitate the download and execution of a second-stage payload, likely malware, by convincing the user to install a fake browser extension or viewer. No scripts were extracted from this sample, but the overall structure and heuristics point to a downloader or dropper.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE

Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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/dragon-adventures-hack-roblox-game-hack PDF link annotation
- https://htdvn.com/public/upload/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-download_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/hack-downloads-for-roblox_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-get-free-robux-game_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-hack-deutsch-ohne-handynummer_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
- https://htdvn.com/public/upload/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-thinknoodles-free-fall-breaking-1-million_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/robux-download_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
- https://htdvn.com/public/upload/files/minecraft-world-free-download_GM479516143.pdfIn PDF document text
- https://htdvn.com/public/upload/files/hacks-for-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-robux-with-proof-2021_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/how-to-hack-roblox-to-get-robux-on-phone_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
`font_00_sfnt_off000030ec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30EC	22532 bytes
SHA-256: `e9d99aac735c861320d739cf677eabe73756537588e1562ed2a3354364a014f9`
`font_01_sfnt_off00006333.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6333	19356 bytes
SHA-256: `c6ee96466a017121bdb015fb192910405a21604be5b38254e34d0d8eda0b43f5`

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