PDF malware analysis — malicious · a3ad8a19fc964c02

MALICIOUS

PDF

35.8 KB Created: 2021-07-04 02:05:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 78f58bfc99bca5ea40c9fbf983bb4cc6 SHA-1: 1fc0a3d9f5b9ac5cad4de3653f63bdb04217dab4 SHA-256: a3ad8a19fc964c0225d1cd2f8b9a53a8ee9badb0bb54b9f4c674bb8b61aaedc1

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 0.9980

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.tw/app/406889139/coin-master-free-spin-links-december-30-2021-game-hack PDF link annotation
- https://diendientuvn.com/public/upload/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/robux-hack-no-apps_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-roblox-codes_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/interfaz-de-hack-de-roblox_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/get-free-roblox_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/what-website-gives-you-free-robux_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-to-get-instant-free-robux_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/spin-link-coin-master_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/coin-master-email-rewards_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-to-get-free-robux-fast-and-easy-2021_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/coin-master-hack-2021-without-human-verification_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-robux-generator_GM431946152.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_002_off000030f9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x30F9	23212 bytes
SHA-256: `ecf190a0da0915d182e4e7ec51a268d24ad1c1e3cec1af22ee0350f382ad8b70`
`font_01_sfnt_off00006586.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6586	19508 bytes
SHA-256: `754a932bb2b0db8b350d03b204fe78a262d217eb92b83dbad0749526d89a5f2b`

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