PDF malware analysis — malicious · 5d11ee047baae73e

MALICIOUS

PDF

41.8 KB Created: 2021-05-17 15:41:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 85a26a56e3e8abc2e28d4d4ddbacdb47 SHA-1: 15a21b6b2369ca7b663cc3846b38b949aadf8761 SHA-256: 5d11ee047baae73e354c242a28bd5cb1455fe594357183e408b9327f1b047fbb

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 0.9971

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/406889139/free-daily-spins-coin-master-2021-game-hack PDF link annotation
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/robux-best_GM431946152.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/free-robux-games_GM431946152.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/free-roblox-wings_GM431946152.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021-ios_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_003_off0000492a.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x492A	24400 bytes
SHA-256: `27d1b803c0b474585b7e954915f9d8c2737183611da28ca01a00069c7c0205e8`
`font_01_sfnt_off00007fa3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7FA3	18708 bytes
SHA-256: `c65851a3c2ccf8ba249fbb480ab00bab2dc65c52c70fe6f18183c59a9b34b022`

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