PDF malware analysis — malicious · bd21dbd4b9cdec6b

MALICIOUS

PDF

33.7 KB Created: 2021-07-04 03:39:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02

MD5: fe2e1b33332c03dc6882b23f4b16de48 SHA-1: c26a538e560b304db22c91c978281ce12b96f05d SHA-256: bd21dbd4b9cdec6becd08ee0a141044cede99764d55ca647a4f4db285de31537

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/avatar-de-roblox-game-hack PDF link annotation
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/free-robux-obby_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/50-robux-free_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/roblox-assassin_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/roblox-on-switch-is-it-free_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/tp-hack-roblox_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/roblox-my-account-was-hacked-what-do-i-do_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/roblox-make-a-shirt-free-shipping_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/roblox-how-to-get-free-items-2021_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/cookie-hack-roblox_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/get-me-free-robux_GM431946152.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
- http://moshaver-computer.ir/all_files/ckfinder/userfiles/files/robux-websites-that-work_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_off00002ed6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2ED6	21700 bytes
SHA-256: `70248b98e16e1ee732baaab6ad9f74a157dbc55809ec2dd4249fba5e2c738ffa`
`font_01_sfnt_off00005eb6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5EB6	18872 bytes
SHA-256: `908eddc7bdadb643790a3e1ec65a3389e2f8fe6f45e645d27e59716e914b495f`

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