PDF malware analysis — malicious · b6ebc25bd817f7af

MALICIOUS

PDF

42.8 KB Created: 2021-05-17 01:56:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 0776be7289af617176ef7d8240a4c36a SHA-1: 1061a1528a34c85354709c24589a501d52a5053b SHA-256: b6ebc25bd817f7af262a56f41f966572cd263250e65d542e94b126c756b74e6b

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 0.9971

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 https://netcdn.xyz/app/431946152/op-rewards-free-robux-game-hack PDF link annotation
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/master-coin-hack-app_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-minecraft-addons_GM479516143.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/minecraft-com-free_GM479516143.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-35-16-hack-apk_GM406889139.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
`stream_003_off000049b5.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49B5	24948 bytes
SHA-256: `a05a6a128682f127ea2db3783524b9c0634046f4df6c60a0986d24783c9e26ad`
`font_01_sfnt_off00008379.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8379	18756 bytes
SHA-256: `060429e30aee9ae32e68a5a96a6a224aa27ea33c727993be362f9dfde6d66d3f`

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