PDF malware analysis — malicious · ab5b7b68fe780635

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 14:48:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 71fd79a50179a92524ae8352645d3925 SHA-1: d6853f69b1078f4eafa95d5433a332c9bf8fcc04 SHA-256: ab5b7b68fe780635833230f72f211fedab6bc6948ba75e00ba3ad675ab59ce24

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/google-how-do-you-get-free-robux-game-hack PDF link annotation
- http://www.woundcare4heroes.org.uk/uploads/files/files/pokemon-go-fest-free_GM1094591345.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/cheats-for-tower-battles-roblox_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/2021-roblox-hacks-february-2021_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/robux-hack-on-wish_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/how-to-get-wall-hacks-in-roblox_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/tiktok-free-nose-job_GM835599320.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-limited-button-roblox_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/roblox-prison-life-free-game-pass_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/roblox-jailbreak-cheat-engine-hacks_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/links-hack-30-robux-adfly_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-robux-no-anti-bot-verification_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_off000031b7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31B7	22172 bytes
SHA-256: `b9e0ea66d6bf04edb2a68f956fa37105b2994e7ab25000d4d614c35411112c9d`
`font_01_sfnt_off000062ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62FF	19388 bytes
SHA-256: `e0d82c167f6ca64f121b23a1748ead6b70296300b19a9978e36a20c70c2cac67`

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