PDF malware analysis — malicious · 379fb7d1d2caff77

MALICIOUS

PDF

33.4 KB Created: 2021-07-09 17:34:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 9cf8b0dca527e0a073f23921db2c21d3 SHA-1: 2752b0b97b167a245d56ea87018b87fd3d8de1c0 SHA-256: 379fb7d1d2caff772a8c3adaedce8cf5b7c7bff80998d9665d18ff0c31ad04b2

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/479516143/free-minecraft-skins-pe-game-hack PDF link annotation
- http://www.glabintl.com/uploaded_files/userfiles/files/robux-hack-2021-admin-codes_GM431946152.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/free-800-robux-code_GM431946152.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/roblox-hack-scripts-for-jailbreak_GM431946152.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/free-roblox-injector_GM431946152.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/free-robux-gen_GM431946152.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/free-robux-hack-on-android_GM431946152.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/earn-robux-today_GM431946152.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/roblox-fe-hacks_GM431946152.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/roblox-sharingan-free_GM431946152.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/free-roblox-animations_GM431946152.pdfIn PDF document text
- http://www.glabintl.com/uploaded_files/userfiles/files/hack-buy-robux_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
`font_00_sfnt_off00003121.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3121	21600 bytes
SHA-256: `790b81f0f5a182dffd9fb123fd39fa0de09ccc51637e3169af1b4aebfb52ce0a`
`font_01_sfnt_off0000606a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x606A	18180 bytes
SHA-256: `03bbaca276f4ce07c12aa831bba89cfcc4ebeeef430a8e21d06434038c5cc938`

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