PDF malware analysis — malicious · 7356a4cfa525c66b

MALICIOUS

PDF

44.3 KB Created: 2021-05-12 05:43:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 558e41fb519a4d066e3b5e0fdbffded3 SHA-1: 7291919b59b4ad7809acf488638ef91116b684e3 SHA-256: 7356a4cfa525c66b478fcb59b4dc14bd8a7418e0b158e831a16932109956889e

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a high-confidence heuristic indicating it links to a game hack redirector, specifically targeting Roblox users. The document body, though partially corrupted, contains text related to changing a Roblox username for free and includes the malicious URL. This suggests a social engineering lure to drive users to a potentially malicious site or download.

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 https://netcdn.xyz/app/431946152/how-to-change-your-username-in-roblox-for-free-game-hack PDF link annotation
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-app_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-roblox-outfits_GM431946152.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coinmaster-spins_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coinmaster_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-links-coin-master_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/demon-roblox_GM431946152.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-free-shield_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-robux_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_003_off00004bfb.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4BFB	26548 bytes
SHA-256: `00b021ba5763041b3f8fb79d9397d66e66db5579573db440ccaf8d1781b38f07`
`font_01_sfnt_off00008738.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8738	19540 bytes
SHA-256: `47934da0ee3f947cf015c12c60a39e8e7f45bd5e58593390266dea94dc2cb6c6`

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