PDF malware analysis — malicious · 79045ad18a2c8865

MALICIOUS

PDF

45.4 KB Created: 2021-06-10 22:23:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 26628ba5f956d60e079ba42d03f63376 SHA-1: c0f45463b2c6cd6e960e10f637d3f0adc19090be SHA-256: 79045ad18a2c8865d53f68a4dd839d6966ed8332383237ab85f648f02ff9fbcf

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9864

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.tw/app/431946152/free-robux-no-human-verification-2021-game-hack PDF link annotation
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/how-to-get-free-robux-using-html-2021_GM431946152.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-link-spin_GM406889139.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/free-roblox-promo-codes-2021-not-expired_GM431946152.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/freer-tiktok_GM835599320.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
- https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-tool-hack_GM406889139.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_off0000522e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x522E	25520 bytes
SHA-256: `afb726d03c9c38a13f3daa6997a5662c8ad3d81daf19ead121307bb4dcef5ccb`
`font_01_sfnt_off00008bf8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BF8	19260 bytes
SHA-256: `6a9b2633b50d097f4b127a07737bc979a0fc1726e0f4efc9f53c1be2676c3116`

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