PDF malware analysis — malicious · c8262d6d51851cbc

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 13:10:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: c3cd5cf78737770611872f2f3a94aded SHA-1: a99b046fd577e12026e33b753692fdd72bd09d27 SHA-256: c8262d6d51851cbcf26b53e2d319176019b7ce31ea018c8d6ffa945509156516

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/how-to-get-free-robux-generator-game-hack PDF link annotation
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/how-to-hack-people-and-get-their-robux_GM431946152.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/rocashcom-earn-free-robux-by-watching-videos-abd-completing_GM431946152.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/free-10-dollar-roblox-gift-card_GM431946152.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/youtube-roblox-cheat-engine-arcane-adventures_GM431946152.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/the-conquerors-roblox-cheats_GM431946152.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/yt-how-download-script-hack-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/free-robux-sign-up_GM431946152.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/roblox-my-account-was-hacked_GM431946152.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/roblox-murderer-mystery-2-candy-hack_GM431946152.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
- https://www.ombalicargo.com/new/public/ckfinder/userfiles/files/https-roblox-free-robux-webword-press-com_GM431946152.pdfIn PDF document text
- https://ombalicargo.com/new/public/ckfinder/userfiles/files/free-robux-glitch_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_off000030da.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30DA	22084 bytes
SHA-256: `95e2822b4665787ce8ccfc49db52db93b82083c9f395ad0ca5a3179a1bcbca15`
`font_01_sfnt_off0000615f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x615F	18984 bytes
SHA-256: `9ace3a26ef8593b997a2527bb5fc552eafd0119b2772e901bbb9c059dfbe5502`

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