PDF malware analysis — malicious · 82bcfc32c4e465b1

MALICIOUS

PDF

45.8 KB Created: 2021-05-13 21:06:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: e8992e9d033bd957875cd998d8bc1dc9 SHA-1: a9cafd2d86e32ae394fc94aa4a0f850894b8b5fe SHA-256: 82bcfc32c4e465b1d10cabf075a15f5426790e652a2fe2f6616ad3ab4763e81f

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, identified as a 'PDF link farm' heuristic, and lures users with 'free generator / game hack' content. The primary URL, 'https://netcdn.xyz/app/431946152/robux-generator-no-survey-game-hack', is a key indicator of the malicious intent. While no scripts were explicitly extracted, the PDF structure and link farm suggest a malicious document designed to redirect users to potentially harmful sites, likely as part of a phishing or scam campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9432

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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.
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/robux-generator-no-survey-game-hack PDF link annotation
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/ios-coin-master-hack_GM406889139.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/minecraft-114-4-download_GM479516143.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/get-free-robux-com_GM431946152.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-robux-safe_GM431946152.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/real-coin-master-hack_GM406889139.pdfIn PDF document text
- https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-master-free-daily-spins-2021_GM406889139.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
`font_00_sfnt_off00004abe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4ABE	24396 bytes
SHA-256: `375814028e87ab032deec660fc223947323b5df26ca5df7c38d83674575c7c86`
`font_01_sfnt_off00008289.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8289	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off00008f9a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F9A	18476 bytes
SHA-256: `8d7caae1347775e8ca08dc472fe9114d87f2701527a8ea14c41e6a126f1cfe3e`

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