PDF malware analysis — malicious · e593cb737c8d86a3

MALICIOUS

PDF

51.5 KB Created: 2021-06-03 08:26:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: d545f128ba519408eb4c550352f23280 SHA-1: 13dd78662b9a71dc80b2c8318b483bf4e1b336d3 SHA-256: e593cb737c8d86a32659ebe45acdecd6079b7e1f5a27c460a52d3e61c5524b98

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 0.9685

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/431946152/free-robux-no-human-verification-generator-game-hack PDF link annotation
- https://www.taline.hr/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
- https://www.taline.hr/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
- https://www.taline.hr/files/free-roblox-app_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/free-robux-link_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/free-robux-pins_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
- https://www.taline.hr/files/free-robux-youtube_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
- https://www.taline.hr/files/free-things-on-roblox_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
- https://www.taline.hr/files/roblox-font-free_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
- https://www.taline.hr/files/free-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.taline.hr/files/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00004fa7.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FA7	27176 bytes
SHA-256: `07eaed2fd3c862e4e66220fd9ebf5ceb7302f8cadf087dd9613bfc81d7dec057`
`font_01_sfnt_off00008e3a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E3A	2820 bytes
SHA-256: `d88f25cfe237a714f996150a11dd8a058f0f7c3e9d1ae91c17b46c10409b6c0b`
`font_02_sfnt_off000097d0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x97D0	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_03_sfnt_off0000a4e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA4E1	18860 bytes
SHA-256: `d7f1bf4664d5c073c741d68610eb5dcf28a8fd63084b2bf56aee4ef09f8af4a0`

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