PDF malware analysis — malicious · 79117687a1ddbde4

MALICIOUS

PDF

35.7 KB Created: 2021-06-27 14:22:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 39bf4365c25a84f28895e8ccddfea6ee SHA-1: a9eebc994e70a38f7cea97f91f0416e4f6d04a2a SHA-256: 79117687a1ddbde4ff9b27da28a35f2010921e14a94d9b0b061e41dcb7b21fcf

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/roblox-jailbreak-hack-money-generator-game-hack PDF link annotation
- https://www.sun-a.com/ckfinder/userfiles/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/free-robux-videos_GM431946152.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/coin-master-ad_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/weird-roblox_GM431946152.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/www-rbx-com_GM431946152.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/free-robux-survey_GM431946152.pdfIn PDF document text
- https://www.sun-a.com/ckfinder/userfiles/files/best-roblox-hacks_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_off0000320f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x320F	22928 bytes
SHA-256: `c191f730127c255df0168e99e5ebcb922d929e20faf504dd3af4b788ca33acbc`
`font_01_sfnt_off000065a7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65A7	19420 bytes
SHA-256: `b435d9770956736cf903f0b1b5457c893e4b4648096187200952389148cb4028`

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