PDF malware analysis — malicious · 3cef9e1d54ce0197

MALICIOUS

PDF

48.5 KB Created: 2021-06-03 19:26:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20

MD5: 10346e3892ddb38f64598dbd87e05722 SHA-1: 4a802022398ac7652c8ee074b4d0e182623cdf75 SHA-256: 3cef9e1d54ce01977abefdf17ebc066544c1ec209f68aa94208bac527de012bb

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body, though heavily obfuscated, contains references to these lures and the authoring application suggests it was generated programmatically. The primary malicious action observed is the redirection to potentially harmful URLs.

Machine Learning

Nyx PDF Classifier malicious score 0.9871

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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.online/app/431946152/robloxheroxyz-free-robux-game-hack In PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/roblox-cheat-robux_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/tiktok-free-folowers-jio-phone-install-tamil_GM835599320.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/get-free-robux-com_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-to-get-free-robux-unauthorized-paymen_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-tiktok-followers-no-survey-or-verification_GM835599320.pdfIn PDF document text
- https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-to-get-20210-robux-for-free_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
`stream_004_off00005524.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5524	30900 bytes
SHA-256: `4cdbb214886082d60695e1e0cb45fdd0f0ff23fb8ca8560b76e5fbb460153087`
`font_01_sfnt_off00009aa9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9AA9	18516 bytes
SHA-256: `7f1ed049da75acc608f0fe66657ee4628d82e762443bbdd60fa03b2ea4156da9`

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