PDF malware analysis — malicious · 3b3934065e8b5c28

MALICIOUS

PDF

48.0 KB Created: 2021-06-09 14:14:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 44c2bb533c05fde3986041b09aa9c79f SHA-1: 809cf8790732abec000b7788fb1a8c4ea2ebff86 SHA-256: 3b3934065e8b5c2870908c4cf89f24e9be63ba783f84a3a572dfde8a1689e431

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.tw/app/431946152/hackear-prison-life-roblox-2021-pc-game-hack PDF link annotation
- http://camphat.com.vn/upload/UploadFiles/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/robux-free-c_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/electric-state-roblox-hacks_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/roblox-redeem-robux_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/www-roblox-com-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_004_off00005052.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5052	24984 bytes
SHA-256: `f40d3bf82d2a113cc5a0ad020d7fcceb0d563249dad527173bce82e17b37bb49`
`font_01_sfnt_off00008a2a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A2A	5596 bytes
SHA-256: `9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5`
`font_02_sfnt_off000096d1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x96D1	18856 bytes
SHA-256: `78180ba7764e69c2172a5156d2aacd518a730c0e09aa9215ca07042c7d6b067e`

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