PDF malware analysis — malicious · 9d6bf003e2b6274f

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 08:56:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 022475735ecd9fc98107acdca92f1ff7 SHA-1: c534a617a58a542a1f22a2e3d32612f0c7e5beab SHA-256: 9d6bf003e2b6274f59f38e5866416e6c8657bf7d809708621f33cb7d38c8ef15

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 0.9980

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 http://netcdn.tw/app/406889139/android-coin-master-3433-apk-hack-game-hack PDF link annotation
- https://radiocaxias.com.br/portal/imagens/files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/roblox-electric-state-hack_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/roblox-zall-site-free-robux_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/is-tiktok-free-on-ipad_GM835599320.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/how-to-spawn-stuff-in-roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/pubg-uc-price-in-bd_GM1330123889.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/install-roblox-player-free_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/no-promoise-cheat-codes-roblox-id_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/hack-the-robux-2021_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_002_off00003234.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3234	22704 bytes
SHA-256: `bded7456775642141724bb8167dd4bbbf9ead8d5eeeda989ca30c07b4913335f`
`font_01_sfnt_off0000651d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x651D	18588 bytes
SHA-256: `f8b80b3065c1e3a7dc7ef4908ed912f155f8ac0097fe236ecf4670cb05101edb`

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