PDF malware analysis — malicious · 6a61a384542ed6d7

MALICIOUS

PDF

45.6 KB Created: 2021-06-03 16:01:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 4c8d23da0900696f1fef66ece7b7f389 SHA-1: 24400efc958f73cfe51b8436ffb6c647783d8693 SHA-256: 6a61a384542ed6d7c7138ff64d5285c79d939eecc9511707ecb9b7e8440580ed

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 0.9864

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.online/app/479516143/how-to-get-minecraft-for-free-on-tablet-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-executor-free_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/robux-generator-without-verification_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/robux-website_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/com-roblox_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-hack-no-verification_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_004_off0000551f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x551F	25636 bytes
SHA-256: `9e1292d76884a4572cf808f1a9e0500b385f5e1bbcafe29c230db4daf1b9c1c8`
`font_01_sfnt_off0000903b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x903B	18104 bytes
SHA-256: `355b14cb1237cfcb324f2687d1fc3cafef0ca686705333751d3cf0333155011f`

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