PDF malware analysis — malicious · 40fc1a539242249c

MALICIOUS

PDF

34.4 KB Created: 2021-06-21 13:02:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 6e493ae9ee631b15931b4e21a16ad96a SHA-1: a3f2cc42486695105f8f9757e88ac440007020ca SHA-256: 40fc1a539242249ce2aa240f456bb05cae2c9fb2a41c781bd18fda17cb9538d8

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 0.9980

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 http://netcdn.co/app/431946152/pahto-forces-roblox-rank-hack-game-hack PDF link annotation
- http://www.technibuild-group.com/uploaded_files/userfiles/files/bc-free-roblox_GM431946152.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/free-robux-no-verification-or-survey-100-real_GM431946152.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/free-robux-gift-card-print_GM431946152.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/citizen-hacks-roblox_GM431946152.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-catalog-free_GM431946152.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/how-we-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-weapons-for-free_GM431946152.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/hack-robux-free-pastebin-no-subscribe_GM431946152.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/robux-hack-tools_GM431946152.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/how-to-hack-into-someones-account-on-roblox_GM431946152.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/how-to-hack-boku-no-roblox-to-get-legendary-quirks_GM431946152.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
- http://www.technibuild-group.com/uploaded_files/userfiles/files/mobihack-net-roblox-hack_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_off00002f84.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F84	22260 bytes
SHA-256: `597fa9ca411ec1a5c37964373d40274be51d9edd3444ade93ff2e2b9a38de482`
`font_01_sfnt_off000060ec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60EC	19244 bytes
SHA-256: `ea78373ce2f764a3825c96830491eb2394d9ba70636c3b55c722043204d8c45b`

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