PDF malware analysis — malicious · 5a4e472e0ffddc3a

MALICIOUS

PDF

52.3 KB Created: 2021-06-13 23:33:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 2f8f3b902f86cd275e9c2b46393e547a SHA-1: 0bade77592bf20f540f769b3ba642d41ed49d2a9 SHA-256: 5a4e472e0ffddc3a4b9f762d1410315dc939ae40eda0fb03da3848d7e93baf62

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 0.9321

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.co/app/431946152/download-roblox-hack-filesblue-game-hack PDF link annotation
- https://www.ktcart.co.in/uploaded_files/userfiles/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/roblox-com-hack_GM431946152.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/roblox-people-girl_GM431946152.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/free-robux-clothes_GM431946152.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/free-roblox-items-on-catalog_GM431946152.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-master-free-rewards-link_GM406889139.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/how-to-get-free-robux-2021-upatchable_GM431946152.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/cheat-phantom-forces-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/free-robux-glitch_GM431946152.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/teach-me-to-hack_GM431946152.pdfIn PDF document text
- https://www.ktcart.co.in/uploaded_files/userfiles/files/free-coins-coin-master-blog_GM406889139.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_off00004c75.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C75	34168 bytes
SHA-256: `8b11e84ba8033a78c07f7e98070e4a90f483c057ae6f16ff938b6dc6877e260a`
`font_01_sfnt_off00009c2f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9C2F	3544 bytes
SHA-256: `0bd6a97e9aba961c3120e454ff6bc1a5c7c47b22c7363d2109141bc5d63ba9fd`
`font_02_sfnt_off0000a804.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA804	19112 bytes
SHA-256: `55623af949ada25e2758a692d98c1c2b282371a38dffb85fa0abad4c54a71b76`

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