PDF malware analysis — malicious · acbaab8b8388c611

MALICIOUS

PDF

42.9 KB Created: 2021-05-17 23:45:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 4e36fad2d63fb21d87e34c2f1136b4bf SHA-1: b206d80201adab6b5bc1abfb366da2f3155bcbc0 SHA-256: acbaab8b8388c61128b0c38adba72779bb76480cc3d7cbdf3b245bcc5c798cc3

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/games-that-can-be-hacked-game-hack PDF link annotation
- http://juscor.com.br/ckfinder/userfiles/files/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/coin-master-free-download_GM406889139.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/change-roblox-username-free_GM431946152.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/daily-free-spins_GM406889139.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/get-free-robux-gg_GM431946152.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/claim-free-robux_GM431946152.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
- http://juscor.com.br/ckfinder/userfiles/files/minecraft-alt-accounts-free_GM479516143.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_off00004b27.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4B27	25468 bytes
SHA-256: `e6db56d84ce18290de9f9a27aa5e9153686e2e2cf8ef61e49c8bcf1d6ea3fe66`
`font_01_sfnt_off00008567.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8567	18304 bytes
SHA-256: `dfa8437c72db791aace135511bda9208016fcfe346c17eaaea4b366062f3a020`

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