PDF malware analysis — malicious · a64fc8feec94efd9

MALICIOUS

PDF

42.9 KB Created: 2021-05-12 08:34:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: b669c35a6ecd56f26052abc1288ec9ae SHA-1: 518682bdcefc5ebaf1dc9561e52f32db0135312c SHA-256: a64fc8feec94efd9f8e87939a7ea8da892f774844136453b2e8f808403268cb4

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 0.9971

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/406889139/download-coin-master-hack-game-hack PDF link annotation
- https://www.taline.hr/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/get-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.taline.hr/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
- https://www.taline.hr/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
- https://www.taline.hr/files/coin-master-free-chip_GM406889139.pdfIn PDF document text
- https://www.taline.hr/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
- https://www.taline.hr/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
- https://www.taline.hr/files/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.taline.hr/files/open-coin-master_GM406889139.pdfIn PDF document text
- https://www.taline.hr/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
- https://www.taline.hr/files/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
- https://www.taline.hr/files/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
- https://www.taline.hr/files/free-spin-coin-master-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
`stream_003_off00004af8.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4AF8	25168 bytes
SHA-256: `84b13641a24072af3fd49fc512c9b5c44502c73d5e6f8221e6b8cc058fdb1f22`
`font_01_sfnt_off00008520.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8520	18296 bytes
SHA-256: `539984bea6ae54f87077e5f6931fd11dcc96f9ae0706aaad6012300b174a755d`

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