PDF malware analysis — malicious · 45ffc52a214aa882

MALICIOUS

PDF

35.0 KB Created: 2021-07-09 07:12:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: a5c6e90106e6b8c17ac1e26b37e6884b SHA-1: 2a2cbf4e24e78f281cb0a5e63ac8bbaace28063e SHA-256: 45ffc52a214aa882f18322f02f45230fb57a2bb8c30d1b891cf1be5c74c8d2a9

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/431946152/roblox-zone-free-robux-game-hack PDF link annotation
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-robux-scratch_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-shirts-roblox-free-shipping_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/pokemon-go-free-7km-eggs-august-2021_GM1094591345.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-2021-september_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/como-hack-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-robux-bc_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-4-all-roblox_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-robux-hack-october-2021_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/coin-master-game-free_GM406889139.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-tiktok-fans-no-verification-2021_GM835599320.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/robux-hack-me_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/hack-coin-master-ios_GM406889139.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/roblox-para-descargar-hackeado_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/all-client-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-easy-2021_GM431946152.pdfIn PDF document text
- https://www.advancedcube.com/uploaded_files/userfiles/files/cheat-engine-for-roblox-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
`font_00_sfnt_off00003054.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3054	23076 bytes
SHA-256: `79404da3cb2fff8694475b1c4092080b3b09ac524735845e65c3eeadd5118c7d`
`font_01_sfnt_off00006420.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6420	18884 bytes
SHA-256: `ee7a09e4b3f15cc364cad973da95635941027bcad42042fb3a1cc04549a97256`

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