PDF malware analysis — malicious · 70b5ba6f394498ae

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 07:15:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 4e85b382c7c16780cbec66e061401ea3 SHA-1: daac61c432e27db96741179ce5f6e9494c5d25c4 SHA-256: 70b5ba6f394498ae7a107dffc5d00478345f5f792dec0019965823562f4239cd

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 0.9865

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.online/app/431946152/free-roblox-hair-girl-game-hack PDF link annotation
- https://www.skygan.com/uploaded_files/userfiles/files/free-rewards-coin-master_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/pokemon-go-free-in-app-purchases_GM1094591345.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-robux-net_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/levvvel-coin-master_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/hack-the-coin-master_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/minecraft-java-free-download_GM479516143.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_004_off00004fe3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FE3	25544 bytes
SHA-256: `3ebce773903bb3f38c3ccb311a445adc9a970178aa8716fdef1c46b75718e001`
`font_01_sfnt_off00008a2b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A2B	18296 bytes
SHA-256: `6d108897347ac398a283a2bff54a73132a19f0ebf91f3138fdca41a09adbfe1f`

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