PDF malware analysis — malicious · b29a6469efcbd121

MALICIOUS

PDF

35.6 KB Created: 2021-07-09 09:00:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: c73efdd95a1319004d733400716dc55d SHA-1: a9a3cb6f472eb59ba5b77d1729faa6fcf1759b97 SHA-256: b29a6469efcbd121934dd1bbd1302ee2d4ca08e1afded9918b2e990db552a659

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/roblox-redeem-robux-game-hack PDF link annotation
- https://www.thekukkad.com/uploaded_files/userfiles/files/wwwfree-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/free-skeptic-roblox_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/free-dominus-roblox_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/apocalypse-games-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/roblox-re_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/robux-free-co_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/roblox-free-wings_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/how-to-get-free-avartar-shings-on-roblox_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/free-draw-roblox_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/roblox-swear-hack_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-a-tablet_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/roblox-how-to-get-free-codes_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/free-robux-2021-new-no-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_off000035c9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x35C9	21908 bytes
SHA-256: `628ffdcd3e64fe3393d866de79ec36583cc39c636a1208816b377916dcc3edc8`
`font_01_sfnt_off00006610.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6610	19060 bytes
SHA-256: `2418f9a3910712e154162ba723da80a9ca97054b5f12f554d13c89fac8708d9e`

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