PDF malware analysis — malicious · c0918d52b4f680eb

MALICIOUS

PDF

34.5 KB Created: 2021-07-07 04:08:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 9e54f4be2a0f3cb22405e884c9d4670a SHA-1: 7841a0087ead2abf9102cb38a35f4845a77cb66b SHA-256: c0918d52b4f680eb3f0caf982339638309a255ce65fc4b775fdd0ca09e408eab

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/robuxy-com-free-robux-game-hack PDF link annotation
- https://www.knjiznica-oroslavje.hr/files/free-robux-codes-2021-mobile_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/how-do-i-get-robux-in-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/cheat-codes-for-roblox-2021-rocity_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/coin-master-fb-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/how-to-hack-any-roblox-account-2021_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/roblox-ben-10-free-download_GM431946152.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/tiktok-free-download-apk_GM835599320.pdfIn PDF document text
- http://knjiznica-oroslavje.hr/files/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-robux-com-real_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/ccv5-roblox-hack-download_GM431946152.pdfIn PDF document text
- https://www.knjiznica-oroslavje.hr/files/free-robux-hack-no-human-verification-or-survey_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_off00003066.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3066	22160 bytes
SHA-256: `a952f96be1080621b5a4ce1c27ed41a257e4a8c95bfeb9185f5c341f54b16784`
`font_01_sfnt_off00006162.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6162	19156 bytes
SHA-256: `b91dd01bf7aa8d90f2367b3a0684131ce65c63b3af9073ea9819d735ead4d135`

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