PDF malware analysis — malicious · 96ed95c4783ca6ae

MALICIOUS

PDF

41.9 KB Created: 2021-04-30 18:40:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: bba7a7b8632ca87e7cd7fd2f08e68e57 SHA-1: 23340e8243ade10063910dd8a8a3a5fb28bcf8f8 SHA-256: 96ed95c4783ca6ae059ced21a2451d9b65833396e98cdf9e0164841a4dac7e6e

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a game hack lure, specifically targeting Roblox players, to redirect users to a malicious URL. The document impersonates Facebook to facilitate credential phishing, indicating a social engineering attack. The embedded URL and multiple related PDF links suggest a downloader or phishing campaign.

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/free-obc-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/free-obc-roblox-game-hack PDF link annotation
- https://fridaytravelnepal.com/userfiles/files/hack-para-android-roblox.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/free-robux-hack-no-human-verification-2021.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/cool-roblox-outfits-free.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/how-to-hack-roblox-with-cheat-engine-mac.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/how-to-get-free-robux-on-roblox-2021-june.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/coolest-free-roblox-items.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/inject-hack-app-roblox.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/lazybux-com-free-robux.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/free-robux-xbox-one-2021.pdfIn PDF document text
- https://fridaytravelnepal.com/userfiles/files/cheats-for-royale-high-school-on-roblox.pdfIn PDF document text
- https://freerobux.cyouIn 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_off00004382.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4382	27592 bytes
SHA-256: `ec57544590c4191066aa91705af1e7868420659a1ede39c147934ed17864219a`
`font_01_sfnt_off00008351.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8351	17948 bytes
SHA-256: `ef4353ce12db9dc7faef24ebc16f601aa90483cc09d010bb6c92a077c976a0dc`

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