PDF malware analysis — malicious · d22513a4afda6261

MALICIOUS

PDF

46.5 KB Created: 2021-06-09 09:13:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 3e83eb6b7019857fca3d828117699c0b SHA-1: 25cd06a2a27834f5f0deddf87a048b7e626db522 SHA-256: d22513a4afda6261dcf01a4c10a396dd4c5f370fbbacb279b0a449a3513de444

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 0.9832

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/how-to-cheat-at-roblox-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/minecraft-free-school_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/pokemon-go-free-677_GM1094591345.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-tiktok-accounts_GM835599320.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hack-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-pics_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-link_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_004_off00005297.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5297	27848 bytes
SHA-256: `fbc908345126c158d6528c60fec990290f826e21f4151a28f256f028d0cc8f6c`
`font_01_sfnt_off000092af.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x92AF	18448 bytes
SHA-256: `6ef8749789ba4efb367ea261bb8636141ad4d16092885f0daf5fc923e47a87df`

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