PDF malware analysis — malicious · b8d3f6ad05966a02

MALICIOUS

PDF

33.2 KB Created: 2021-07-03 16:31:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: dff99c32aed81929631d76b88513a630 SHA-1: 163befb26eed0524e2bd4f146c71d7d2b0343fb7 SHA-256: b8d3f6ad05966a02e06f969b930134ebb661fbc170d201a797dda57a699940a3

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/835599320/get-free-tiktok-followers-game-hack PDF link annotation
- https://www.advancisveterinary.com/uploads/files/files/free-clothes-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/money-hack-jailbreak-roblox_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/roblox-hack-game_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/roblox-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/viper-venom-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/coin-master-fan-page_GM406889139.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/how-to-download-wurst_GM479516143.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/descargar-roblox-hack-robux-pc_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/free-robux-free-gift-card_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/free-robux-november-2021_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/this-group-gives-free-clothes-robloxs_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/how-to-hack-a-minecraft-server_GM479516143.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_off00002f6b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F6B	21676 bytes
SHA-256: `a522e7d9900283da95c94e1570e5f29116464ca3c2ace18e1ee84fcb33f938e7`
`font_01_sfnt_off00005f27.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F27	18208 bytes
SHA-256: `d6dc0fe96375bf479973c15f4dc80cb5149eb13cbf7121a6896fdf070428f5c7`

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