PDF malware analysis — malicious · a154bf9b6d708689

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 09:00:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 1b89d32e108974706f7e082e3314ca6b SHA-1: fea77d98ade1ce7c71af4bfc2a0552164f01904a SHA-256: a154bf9b6d70868960356f4e02d7dc2272517bb73d2770b87aa8cd1759c8c124

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a high-severity heuristic firing for linking to a 'free generator / game hack' redirector, specifically 'https://netcdn.xyz/app/431946152/free-robux-card-codes-game-hack'. The document body also contains similar lures and numerous other URLs pointing to scam-related PDF files. This suggests the primary goal is to trick users into visiting malicious sites, likely for financial gain or further malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/free-robux-card-codes-game-hack PDF link annotation
- https://goodtools.tw/upload/files/free-robux-scam_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/hack-minecraft_GM479516143.pdfIn PDF document text
- https://goodtools.tw/upload/files/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/rape-simulator_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
- https://goodtools.tw/upload/files/roblox-cheat-robux_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-coin-spin_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/robux-free-co_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-roblox-premium_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-coin-master-spins-2021_GM406889139.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
`font_00_sfnt_off0000492d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x492D	25232 bytes
SHA-256: `65421ce2648c4cdef61c809ef9b313d5ec0f0d713740a7b69d8eb4d02c71160b`
`font_01_sfnt_off00008390.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8390	18416 bytes
SHA-256: `79c56a0f23d4fc34690a575a065be14b64911c3c5a3331038291264b4b7107af`

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