PDF malware analysis — malicious · 5c5aec57b93a7ef5

MALICIOUS

PDF

55.8 KB Created: 2021-05-18 03:53:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: f1232603e8cc16c07c4cf0efab07ff83 SHA-1: 7d89474ac4b22864d75f2edf7a1d148c8eb50191 SHA-256: 5c5aec57b93a7ef54fa149ec8b8aa6f2b75b1e1607cac4a314160e49292982b1

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 0.8407

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-70-spin-link-today-game-hack PDF link annotation
- https://www.tvoyo.tv/ckfinder/userfiles/files/level-coin_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/free-robux-clothes_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/hack-coin-master-android_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/roblox-executor-free_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004c20.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C20	26552 bytes
SHA-256: `0186d24605f8dfd71546892b3a1d7e38ee60d5dd1f96d1dc33ba159c9a1b65f9`
`font_01_sfnt_off00008a4d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A4D	3088 bytes
SHA-256: `e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222`
`font_02_sfnt_off00009518.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9518	7960 bytes
SHA-256: `cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2`
`font_03_sfnt_off0000a83e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA83E	18472 bytes
SHA-256: `a3b16dd292719d3d3db8fc4f556ffe5ac43d4d3177a11b2b95197a9a65896a05`
`font_04_sfnt_off0000cb2e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCB2E	4272 bytes
SHA-256: `fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0`

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