PDF malware analysis — malicious · f6f0964b5d856589

MALICIOUS

PDF

48.9 KB Created: 2021-06-03 15:40:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: c60a3d5175c2a5eee87f780959641e01 SHA-1: 1a6f647ba1163f5d7c17cf45171d7b630c53bc0b SHA-256: f6f0964b5d856589c07a5392d73db0a6f456e953773329cfc7011f0bfb2f0987

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 0.9796

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-avatar-ideas-game-hack PDF link annotation
- https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-facebook_GM406889139.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/roblox-hack-client_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/free-robux-group_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.themerchantshouse.co.uk/uploads/files/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000524d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x524D	25808 bytes
SHA-256: `9c38ab2b051145af3ec886acb62967bdb29047415539c525d24295540cb43473`
`font_01_sfnt_off00008e67.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E67	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off00009b79.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B79	18568 bytes
SHA-256: `c4a7d6ec4adb5f926941c9d8a4fb8d10a178cf54d3fd19c5414a8c2ff4fc644a`

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