PDF malware analysis — malicious · bc994087deb131c0

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 16:38:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 7c058e6a1ba084ce0e00b468dc75239d SHA-1: 7810cee45a9652d29064923933db8e57526369fc SHA-256: bc994087deb131c024ecd0bc1103b3bf86b9c50be4ecb36d676ed2a6f920a74a

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/roblox-accounts-for-sale-free-game-hack PDF link annotation
- https://allhimalayantreks.com/userfiles/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/free-nike-pants-roblox_GM431946152.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/free-robux-android_GM431946152.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/free-robux-secret-code_GM431946152.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/roblox-images_GM431946152.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/facebook-coin-master_GM406889139.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/roblox-hack-client_GM431946152.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/free-roblox-acc_GM431946152.pdfIn PDF document text
- https://allhimalayantreks.com/userfiles/files/aimbot-hack-roblox-cbro_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
`font_00_sfnt_off00003092.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3092	21832 bytes
SHA-256: `8b481e393049872e383e5342ab8637ea5ad23eae3080e754c6fe7227c8da8047`
`font_01_sfnt_off000060b3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60B3	18896 bytes
SHA-256: `419cb3cdc3e7cbb6ba4548049bcaf8f3e92c4ae134572e03770077cf2843ed8e`

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