PDF malware analysis — malicious · 637a204b1aae6c8b

MALICIOUS

PDF

49.9 KB Created: 2021-06-02 06:24:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02

MD5: fbc00cd1251c34f938e1ca8c827676b4 SHA-1: b049e00f44e9c0438298d6acc07956fb2770611c SHA-256: 637a204b1aae6c8bb5d74df1f38af12eb9542e205063cdf173d07ddd415228d6

162 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1071.001 Web Protocols

This PDF document employs a lure of free game hacks and generators, impersonating brands like Microsoft, to trick users into clicking malicious links. The embedded URLs, such as 'https://netcdn.xyz/app/479516143/minecraft-free-download-pc-game-hack', are designed to lead users to potentially harmful content or phishing sites. The ML classifier strongly indicated maliciousness, supporting the observed lures.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

Heuristics 6

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.
Remote-support tool lure high SE_REMOTE_SUPPORT_LURE

Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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/479516143/minecraft-free-download-pc-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/479516143/minecraft-free-download-pc-game-hack PDF link annotation
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/roblox-online-free_GM431946152.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/free-robux-website_GM431946152.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/free-roblox-hack_GM431946152.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/minecraft-free-android_GM479516143.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
- http://elearning.mamduh.my.id/__statics/gudangsoal/files/roblox-hack-com_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000552e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x552E	29092 bytes
SHA-256: `982c42d45cca6061cada9b7e306d50fc4210eb30e1d64df12de817edbdf83cca`
`font_01_sfnt_off00009653.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9653	2820 bytes
SHA-256: `96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689`
`font_02_sfnt_off00009ff4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9FF4	18444 bytes
SHA-256: `064b6ae6fa3971595f13ccf6914158de219c664ec1a7cfca763d46b46d8283c4`

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