PDF malware analysis — malicious · c1c1b9ec3b171fee

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 21:39:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 302eb9b10ad990f364f151b003e6c0d6 SHA-1: 08efafb3d16a48f2c19f0cd5ef098977cf533130 SHA-256: c1c1b9ec3b171feee358406597e6a39600b0e377f3e908624cdcef7d00455af7

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.co/app/431946152/profile-roblox-free-game-hack PDF link annotation
- https://www.tvoyo.tv/ckfinder/userfiles/files/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/hacks-for-champion-simulator-roblox_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/free-roblox-birthday-cards_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/roblox-hack-game_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/free-roblox-characters_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-get-free-robux-no-hacks-2021-in-seconds_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/hackear-coin-master-android_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-ipad-2021_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-get-free-items-roblox_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
- https://www.tvoyo.tv/ckfinder/userfiles/files/ben-10-cheat-codes-roblox_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_off0000308f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x308F	22716 bytes
SHA-256: `15e6f058afe7d776ed58284a00aee55396a89898f9477663c2513faebc8a519d`
`font_01_sfnt_off00006353.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6353	18924 bytes
SHA-256: `b263ddcf2f61846fffad2841ecb0b11c0dad28d300e1b66e3cda6d31912485a8`

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