PDF malware analysis — malicious · 28e9f59e8bef5562

MALICIOUS

PDF

37.4 KB Created: 2021-06-19 00:03:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 2d4c23ec060746d705c5192fd51b621f SHA-1: 10ab75a3dab499343c077d09e4ce28edad5f21eb SHA-256: 28e9f59e8bef556278441519ae5adc017ff95e0d2ce0fa536d0ce7b147bcdc1e

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 0.9981

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/fly-script-roblox-hack-game-hack PDF link annotation
- http://kumotor.com.tw/upload/userfiles/files/tiktok-free-online-download_GM835599320.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/minecraft_GM479516143.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/roblox-robux_GM431946152.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/master-coin-hack-apk_GM406889139.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/roblox-com-free-play_GM431946152.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/hack-coin-master-game_GM406889139.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/roblox-people-girl_GM431946152.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/how-to-get-more-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://kumotor.com.tw/upload/userfiles/files/robux-hack-real-one_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_off00003ba3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3BA3	21960 bytes
SHA-256: `e70a3c777e89ba12df8fc5ea7bb001ff86c2eac838fe60076a8d61da3d132c50`
`font_01_sfnt_off00006c41.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C41	19400 bytes
SHA-256: `e0c986c85ae084cddaaa4c4fe2f812764a953f9c2193aa1153974a4ebf8766bb`

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