PDF malware analysis — malicious · acda1159d33fa4f2

MALICIOUS

PDF

34.5 KB Created: 2021-06-18 22:03:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: cb3c1c240d17dbb4afa6b1c9e61a5e99 SHA-1: 291aa56a6ea089a008b52850e4c34b2ce0d676c2 SHA-256: acda1159d33fa4f22fc29024da235dd6b7b0eff1ec292f070a09c8e772f1ba93

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.co/app/431946152/rbx-boots-free-robux-game-hack PDF link annotation
- http://kfz-service-etp.de/images/roblox-pokemon-brick-bronze-how-to-get-free-eve_GM431946152.pdfIn PDF document text
- http://kfz-service-etp.de/images/freer-pro-tiktok_GM835599320.pdfIn PDF document text
- http://kfz-service-etp.de/images/roblox-game-free-demo_GM431946152.pdfIn PDF document text
- http://kfz-service-etp.de/images/admin-command-hack-guide-roblox_GM431946152.pdfIn PDF document text
- http://kfz-service-etp.de/images/free-roblox-gear-2021_GM431946152.pdfIn PDF document text
- http://kfz-service-etp.de/images/robux-codes_GM431946152.pdfIn PDF document text
- http://kfz-service-etp.de/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- http://kfz-service-etp.de/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
- http://kfz-service-etp.de/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://kfz-service-etp.de/images/is-free-robux-real_GM431946152.pdfIn PDF document text
- http://kfz-service-etp.de/images/free-robux-earn_GM431946152.pdfIn PDF document text
- http://kfz-service-etp.de/images/yt-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://kfz-service-etp.de/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
- http://kfz-service-etp.de/images/pastebin-raw-free-robux_GM431946152.pdfIn PDF document text
- http://kfz-service-etp.de/images/what-is-a-robux_GM431946152.pdfIn PDF document text
- http://kfz-service-etp.de/images/roblox-promo-code-hack_GM431946152.pdfIn PDF document text
- http://kfz-service-etp.de/images/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
- http://kfz-service-etp.de/images/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
- http://kfz-service-etp.de/images/free-random-roblox-accounts_GM431946152.pdfIn PDF document text
- http://kfz-service-etp.de/images/free-tiktok-likes-trial_GM835599320.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_off000030c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30C7	22512 bytes
SHA-256: `74e6a15cf97dfc20a4b6b16d2dddaab62a9e9d620800e793e33189e9bf0a7048`
`font_01_sfnt_off0000631c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x631C	18636 bytes
SHA-256: `30290bf214a63e2e4e9bface62d9da9e9046a960ce8b5b06580f8b2871447507`

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