PDF malware analysis — malicious · d47610e6ff8ef99c

MALICIOUS

PDF

40.0 KB Created: 2021-04-25 18:42:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23

MD5: e804ed1330b15cc7c9c05f78f4fb2495 SHA-1: 043ff36f65a8ec254d45b6b3951f39d841ca16b9 SHA-256: d47610e6ff8ef99ced70600966f27dbc90fc13cd2b055f8655d2892362cd4af2

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 0.9941

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: https://netcdn.xyz/app/431946152/how-use-cheat-engine-on-roblox-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 https://netcdn.xyz/app/431946152/how-use-cheat-engine-on-roblox-game-hack PDF link annotation
- https://lib-stie.yai.ac.id/repository/cardcode-pw-free-roblox.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/videos-de-como-ser-hacker-en-roblox-2021.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/free-roblox-codes-for-clothes.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/free-infinate-robux-regukar.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/how-do-you-use-cheat-engine-on-roblox.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/roblox-legit-free-robux.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/roblox-como-tener-robux-gratis-2021-enero-nuevo-hack.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/roblox-noclip-hack-december-2021.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/how-to-become-admin-on-roblox-with-cheat-engine.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/hacks-para-db-rage-roblox.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
`stream_003_off0000400d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x400D	24640 bytes
SHA-256: `e13112279fe4ec9db9b49b05d1a10f42ea0739f0ece415d56a3175ab79ed500e`
`font_01_sfnt_off0000783d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x783D	19040 bytes
SHA-256: `eda714daf20451bf3d53aa1bb0a7c1d3bc0c9dda0d05aa5e000d17890110f802`

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