PDF malware analysis — malicious · 5a1ebf6cb0ffbab9

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 07:21:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 7bb17451bc14078a36f6807f6da90a10 SHA-1: 5363f6356f564db64e2ed472726c55abcf99d87c SHA-256: 5a1ebf6cb0ffbab97c9f48546cf255bbe11e12436270f55a29f46bdf96137eca

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9865

Heuristics 4

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.online/app/406889139/coin-master-fb-free-spins-link-game-hack PDF link annotation
- https://www.andhrarealty.in/uploaded_files/userfiles/files/claim-roblox_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-extra-spins_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/free-tiktok-followers-quick_GM835599320.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-hack-ios_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-offline-hack_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/free-robux-link_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/free-free-robux_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/roblox-earn_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/hwo-to-get-free-robux-with-out-hacks-or-illeagley_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/get-free-robux-no-human-verification_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_off00005099.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5099	24420 bytes
SHA-256: `cb22b19c5e03d428d65f0bb2f056bd5ad6bbf9245867f91a72855575f4ad39fe`
`font_01_sfnt_off000088a1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88A1	18212 bytes
SHA-256: `327fc99e7b5c2067b4ecc0387a10766c92f977f0ec9955a16f9230cf80a034c4`

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