PDF malware analysis — malicious · 0638f0e982c387df

MALICIOUS

PDF

35.4 KB Created: 2021-06-30 09:10:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 8900248a969ab78888a45859dd15c48c SHA-1: 1125d2e54c6c189ecfdec745b4714af2854c376d SHA-256: 0638f0e982c387df9af086c362f345080defb862e0254fcce2f0e4439b70b989

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/how-to-hack-other-people-roblox-accoubt-game-hack PDF link annotation
- https://www.advancissurgical.com/uploads/files/files/roblox-redeem-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-into-a-group-on-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-roblox-exploit-no-crash_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/whats-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-how-to-cheat-on-obstacle-paradise_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-free-play_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-discord_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/robux-hack-menu_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/comment-cheater-sur-flach-ticoon-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/robux-adder_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_002_off00002fa3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2FA3	23408 bytes
SHA-256: `1d58618efc48a2e7b74b6c4c39d4c28267f264ca4b9a07b808d0041c688b1ca5`
`font_01_sfnt_off000063e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63E5	19560 bytes
SHA-256: `6dca64710647ea92a3ea7d7c1754d79a6deb0ccdb6a676699efb6343cfdc5069`

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