PDF malware analysis — malicious · cfeb04a7bb0f7e54

MALICIOUS

PDF

41.9 KB Created: 2021-05-10 21:32:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: a6cd2a69529e339de32990c148806742 SHA-1: 0bf8ca2157333c08595ec8b561fc38dc0f0543bf SHA-256: cfeb04a7bb0f7e54a2349b32c8d0ec481ee5af3de1d5e1f0245a56496832fedf

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 0.9971

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.xyz/app/406889139/coin-master-daily-free-spin-app-game-hack PDF link annotation
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-apk-mod_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-hack-account_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/offers-for-robux_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/get-free-robux-info_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/optifine-mcpe_GM479516143.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/free-script-executor-roblox_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/robux-earning-websites_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/free-robux-obby_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
- https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/get-coin-master-spins-free_GM406889139.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_003_off00004a36.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A36	24192 bytes
SHA-256: `ba5eb422265f6f72d98fa3ef88ae6664da104f13ed34e7fa0d33bde54595b452`
`font_01_sfnt_off00008180.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8180	18308 bytes
SHA-256: `f9a3a46f76b0cae8a4d9bd0baf07f2a5aefd3f4554b846be65e0119e8f17791d`

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