PDF malware analysis — malicious · 5d8bdb5b9d32acde

MALICIOUS

PDF

35.4 KB Created: 2021-07-08 21:05:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 14ca8643758dbcadbeb323a6432b533b SHA-1: 200d2b13952255714620b0c7cabdf5b6637908fe SHA-256: 5d8bdb5b9d32acde41db72f2108c1dc7ff89cd284f5ab25ee836603e4aa742d1

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.tw/app/406889139/free-role-in-coin-master-game-hack PDF link annotation
- https://maths-pdf.fr/ckfinder/userfiles/files/roblox-ghost-hack-cheat-engine-2021_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/tiktok-likes-free_GM835599320.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-minecraft-mods_GM479516143.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/roblox-epic-rap-battle-cheat_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/get-free-tiktok-followers-no-verification_GM835599320.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-robux-apk_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/como-hackear-roblox-para-tener-robux-infinitos-para-pc_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/games-o-roblox-that-allow-free-song-id_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_off0000352d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x352D	22960 bytes
SHA-256: `47c7cfc40cae4462c617c6de2dac9e06fcd6ed4cc87e289c62ff3450e64a52c2`
`font_01_sfnt_off000068a8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68A8	18072 bytes
SHA-256: `b51d2cd8f3a2b2ab778bd1d4ef698f8fe12f93fad8d5b53ad600fdb8a6c5eb0e`

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