PDF malware analysis — malicious · a3dd981746b49e64

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 05:21:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 40d1606662954fafba94041b5515e081 SHA-1: 108bccf999018344ad62bcd06b3157f674c618ed SHA-256: a3dd981746b49e649869afeffab4ba75cda1b81350cfb9523f49a6b5ce106079

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-giveaway-game-hack PDF link annotation
- https://balibanknews.com/new/public/ckfinder/userfiles/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/free-tix-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/free-spins-coinmaster_GM406889139.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/red-boy-v2-jailbreak-roblox-hack-download_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/free-800-robux_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/roblox-jail-break-noclip-hack_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/fb-coin-master-hack_GM406889139.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/como-descargarse-hacks-en-roblox-jailbreak_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-with-mods_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/cheats-for-royale-high-school-on-roblox_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/cheats-in-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://balibanknews.com/new/public/ckfinder/userfiles/files/free-robux-hack-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_off00002feb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FEB	22432 bytes
SHA-256: `5b35e68a318917be9f3cce02e0fda1e16f57111eb198cd6faff63a28c82c2a6a`
`font_01_sfnt_off00006184.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6184	19296 bytes
SHA-256: `f9d47c8927f06aca09230474687c7e62d7780f8e0224e11b3e175debbf54a907`

Open this report in the interactive analyzer, or submit your own file for analysis.