PDF malware analysis — malicious · cc76056e8fe52fec

MALICIOUS

PDF

35.6 KB Created: 2021-07-04 06:04:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: e89d21819d94a185862c607f0ac58723 SHA-1: aa402249ff9bc3f590581e6d3a6ad163d74f02f3 SHA-256: cc76056e8fe52fec9df03120e3750cf269c556584dca6574c5c30babf1f4f312

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/free-robux-easy-game-hack PDF link annotation
- https://laokhwanhos.com/ckfinder/userfiles/files/how-to-get-free-obc-on-roblox-working_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/roblox-hacked-cliient_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/roblox-cheat-codes-for-robux_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/how-do-you-hack-money-on-roblox_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/coin-master-free_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/roblox-bee-swarm-simulator-free-eggs_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/roblox-fan-group-simulator-cheat_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-robux-using-inspect-2021_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/pokemon-go-free-download-hack_GM1094591345.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-roblox-invitations-loadstrings-full-lua-free_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/comment-hacker-sur-roblox-admin_GM431946152.pdfIn PDF document text
- https://laokhwanhos.com/ckfinder/userfiles/files/free-roblox-gift-card-codes-2021_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_off000033c5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33C5	22700 bytes
SHA-256: `77e93c6997142988461935b0ca31f656d4bfb452ecd29845476a436f9e90ce07`
`font_01_sfnt_off000066ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66AD	18896 bytes
SHA-256: `08474bdc287d3651cd8985bef3354d1e01eac2de28e8a43cfa13c093cfea4674`

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