PDF malware analysis — malicious · cb8de266e88c1604

MALICIOUS

PDF

46.7 KB Created: 2021-06-03 07:04:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 8553c98173df8b5ceedc25bb349dcf2e SHA-1: d6979aba347a9e1e5bda709d7b7c228e4555ca70 SHA-256: cb8de266e88c160419b092fef65e5cd2ab14ed2b074652b37b339766b731f989

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded links that redirect to websites promising game hacks and free currency, a common lure for malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The primary IOC is the redirect URL, which likely leads to a site hosting further malicious content or exploits.

Machine Learning

Nyx PDF Classifier malicious score 0.9748

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.online/app/406889139/coin-master-free-spins-and-coins-group-game-hack PDF link annotation
- http://www.js100.com/uploads/ckeditor/files/get-free-robux-now_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/pokemon-go-free-pokeballs-2021_GM1094591345.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-freebies_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-robux-apk_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/pubg-uc-redeem-code-midasbuy_GM1330123889.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/try-minecraft-free_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/wurst-mc_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off000050a4.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x50A4	24876 bytes
SHA-256: `d3e8e132339441326ad4cfdb2e95f3515c80a0cf291d22fdf97a7563156095f8`
`font_01_sfnt_off000089f6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x89F6	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off000093e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x93E1	18200 bytes
SHA-256: `54fd5b3cea3424e44b8aa3e0b36c372e6f6c7ec27c44e60f8f157f6f0e83aa54`

Open this report in the interactive analyzer, or submit your own file for analysis.