PDF malware analysis — malicious · f915af190a6bfc28

MALICIOUS

PDF

45.5 KB Created: 2021-05-13 03:35:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 6d38072c06905399790097703d161a36 SHA-1: d85851c74681956e2bb16f447d508c26478d41da SHA-256: f915af190a6bfc28ecdaec8dc8d8766145746834f88aefb1d637b9bdc820c83d

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 0.9507

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/roblox-free-executor-game-hack PDF link annotation
- https://www.liputanbali.com/assets/CKImages/files/robux-today_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-robux-script_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/can-you-give-me-robux_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-chest-coin-master_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/roblox-verification_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/can-you-earn-robux_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/robux-free-online_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/how-you-get-free-robux_GM431946152.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_003_off0000492c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x492C	25336 bytes
SHA-256: `bcfb9ecc70fb08c83194d1e4c75543e2885d386a05fdd1adaff83d2eb168a8bf`
`font_01_sfnt_off000082f5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82F5	3884 bytes
SHA-256: `40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf`
`font_02_sfnt_off00008f9c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F9C	18192 bytes
SHA-256: `7ba247a64e9cc24d80440ed01eefe46d1337aad9cec78f28e7b2b5b32c9414c4`

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