PDF malware analysis — malicious · 733af32cd9408c38

MALICIOUS

PDF

35.7 KB Created: 2021-06-25 17:51:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: d57f8e715db114b5980c2a0c57a661e7 SHA-1: 16f599863605744a9f0735d29521b3d7cd1d8625 SHA-256: 733af32cd9408c38ef4db39c2e4730ca6fff542537aad723ccd5e6876cb4e8ee

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses brand-impersonation credential phishing. 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 5

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.
Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH

Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.co/app/431946152/how-to-bypass-roblox-cheat-engine-without-download-game-hack.
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.co/app/431946152/how-to-bypass-roblox-cheat-engine-without-download-game-hack PDF link annotation
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/dis666-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-coins-and-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/pokemon-go-free-qwilfish_GM1094591345.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/99-999-999-999-free-robux_GM431946152.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/how-to-get-free-stuff-in-the-roblox-catalog-2021_GM431946152.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/roblox-hax_GM431946152.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-robux-gen_GM431946152.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
- https://www.lanumedispa.ie/uploaded_files/userfiles/files/free-robux-hack-no-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_off00003054.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3054	22656 bytes
SHA-256: `9b00b3e89e5c9e5f7a077a5de281030821988eef6b6e71bce94c58e712a5f498`
`font_01_sfnt_off0000632f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x632F	20076 bytes
SHA-256: `b688ee32ff2bf86c9a0e9ebc4ce9760b12a760b0c8b338e9b795120eea8d4cf7`

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