PDF malware analysis — malicious · 4d1b8ac0db790a62

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 16:13:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 19c5c4e72172df4353c3fd2b8253fb21 SHA-1: 215a9f0fdc8dc5911f51ad4e2a9e0594e0048d58 SHA-256: 4d1b8ac0db790a62d82c1889bb4dc0006af6caed9f588d7ea22c6128a47f8e86

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/coin-master-hack-app-game-hack PDF link annotation
- https://indo-parabola.com/ckfinder/userfiles/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
- https://www.indo-parabola.com/ckfinder/userfiles/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
- https://indo-parabola.com/ckfinder/userfiles/files/download-coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
- https://indo-parabola.com/ckfinder/userfiles/files/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
- https://indo-parabola.com/ckfinder/userfiles/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
- https://www.indo-parabola.com/ckfinder/userfiles/files/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
- https://indo-parabola.com/ckfinder/userfiles/files/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://indo-parabola.com/ckfinder/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
- https://www.indo-parabola.com/ckfinder/userfiles/files/free-roblox-com_GM431946152.pdfIn PDF document text
- https://www.indo-parabola.com/ckfinder/userfiles/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://indo-parabola.com/ckfinder/userfiles/files/free-robux-script_GM431946152.pdfIn PDF document text
- https://www.indo-parabola.com/ckfinder/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.indo-parabola.com/ckfinder/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
- https://www.indo-parabola.com/ckfinder/userfiles/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://indo-parabola.com/ckfinder/userfiles/files/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
- https://www.indo-parabola.com/ckfinder/userfiles/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
- https://indo-parabola.com/ckfinder/userfiles/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
- https://indo-parabola.com/ckfinder/userfiles/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
- https://www.indo-parabola.com/ckfinder/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
- https://indo-parabola.com/ckfinder/userfiles/files/is-coin-master-free_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_off000047ac.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x47AC	24948 bytes
SHA-256: `eae40e9fb52b5624505778c99c591202f964768f77a717244f1e82b670a9cbad`
`font_01_sfnt_off00008130.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8130	17892 bytes
SHA-256: `f939fda97690d6a809d743b342add8ec97984f5e978608423f32dd39679c4d64`

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