PDF malware analysis — malicious · fba9dcb34855914e

MALICIOUS

PDF

34.7 KB Created: 2021-07-09 08:19:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: a0ea81f88ba92d059dbe743b721ac9a3 SHA-1: 83c2c4220642a56ea7b131f96d05e2520c34aad1 SHA-256: fba9dcb34855914e5e8efaa48645d5103533cc3ccba23c9219dcb3bf9bfa01a0

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/431946152/free-robux-co-game-hack PDF link annotation
- https://vierabyragazze.com/upload/files/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-robux-trade_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/websites-for-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/hilton-hotel-hack-roblox_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/get-free-absol-egg-brick-bronse-roblox_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/cm-spin-link_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/cute-things-to-wear-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/how-to-hack-roblox-accounts-with-edit-this-cookie-2021_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/hacks-for-roblox-csgo_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/one-piece-millenium-tutorial-roblox-get-free-evil-fruit_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/free-robux-no-pass-required_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/what-games-give-you-robux_GM431946152.pdfIn PDF document text
- https://vierabyragazze.com/upload/files/www-coin-master_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_off00002ffd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FFD	22948 bytes
SHA-256: `79aa851644db72cbf18cc94e2b45910b5b1af6691e2c06583a39f9c57f3bbf89`
`font_01_sfnt_off000063a7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63A7	18716 bytes
SHA-256: `ae86725dd70d168e8b5a24377d7effb3bd88f81667aa3e091abc0f5759eb354b`

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