PDF malware analysis — malicious · 6720b0f4cedebf29

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 12:42:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 1a318d73b0aa1e7a0396727fe1140f01 SHA-1: a18e471f36ae1bd6bcf38c0380a17a30b275798f SHA-256: 6720b0f4cedebf2913d0d55d7f4ab582d3132282c1df7b2a51ab7b6cec6740c5

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/infinite-robux-game-hack PDF link annotation
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/robux-free-pc_GM431946152.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/catalog-in-roblox-free_GM431946152.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/free-fire-coin-master_GM406889139.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/roblox-cheat-engine-fun-hacks_GM431946152.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/roblox-66-hack_GM431946152.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-blogspot_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
`font_00_sfnt_off000031c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31C6	22772 bytes
SHA-256: `197604c932c841d0b4edac5b6cdec5e5bac6779f1d76082a9963e86eeb48e42d`
`font_01_sfnt_off000064f1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64F1	18776 bytes
SHA-256: `6559db9f10e61eafe98b55ccb4610bfd84743cf65295aeea339135f9dc34c138`

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