PDF malware analysis — malicious · fd5131820a7fcdb6

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 14:04:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02

MD5: ad9b3779d2dafab6da4ed612bf032a81 SHA-1: 68427c4521beef5b03b2db070754171d611d539f SHA-256: fd5131820a7fcdb621f853cc131b1b3a97a9869f3e1c2f174734f58c24f73933

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/479516143/minecraft-hacks-18-9-game-hack PDF link annotation
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/facebook-coin-master_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-arsenal-hacks_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/roblox-install-free_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/roblox-comandos-para-free-admin-para-que-parezcas-un-virus_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-items-katalog-roblox-glitch_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/adopt-me-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coin-master-tips_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-robux-2021_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_off000031ac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31AC	22660 bytes
SHA-256: `0e1d0daae66ef9acaed27acb0c54c8809d7c2f44b459a292f08bb5341ae5d23d`
`font_01_sfnt_off00006449.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6449	18508 bytes
SHA-256: `cd9237b9687b7c478886c0b60ca23dbd49803dce24975db22de6864494fbbe68`

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