PDF malware analysis — malicious · ec67c6e64414a26e

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 14:52:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 862bdf8c6aa1b77054687ca1c50eaaf3 SHA-1: 19de0859cb6b5b074c58299de8c1e0cf77739b05 SHA-256: ec67c6e64414a26e2b87a611c61d9f5ab7c05366a9bd20e6559efd358ebb2356

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/406889139/coin-master-hack-mod-apk-unlimited-spin-download-game-hack PDF link annotation
- https://key8013805.com.tw/upload/files/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/free-robux-rblox_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/how-to-hack-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/get-robux-today_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/roblox-clothes-hack_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/lukignton-international-airport-free-roblox_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/how-to-hack-badges-roblox_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/roblox-free-80-robux_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/coin-master-event-hack_GM406889139.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/bexgg-free-robux_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/free-roblox-mobile-robux-hac_GM431946152.pdfIn PDF document text
- https://key8013805.com.tw/upload/files/minecraft-bedrock-edition-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_off00003167.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3167	23020 bytes
SHA-256: `df26d3b10f4eafa98e6231819362008e2e3c63e0b82e426ca41e906e4695ebf9`
`font_01_sfnt_off0000651f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x651F	19208 bytes
SHA-256: `168ed34bac05dcfadb60f7a37d17c2e91e9de75542f03c32a69fdbfa53a2f5ea`

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