PDF malware analysis — malicious · ec59e54eef2823d4

MALICIOUS

PDF

46.9 KB Created: 2021-06-03 21:59:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 09f56a6093774d74f36d431cbbe18052 SHA-1: d6c0295f06ee6e4d2e490a33c689df00f440ada8 SHA-256: ec59e54eef2823d4bbb90a539b5edb8af8eeafd8d22f9717bf7e70830ccda8e1

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks and free spins, a common lure for malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The document body and heuristics indicate a social engineering tactic to drive users to external sites, likely for further exploitation or phishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

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-link-blogspot-april-2021-game-hack PDF link annotation
- http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/mcpe-client_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/pubg-uc-hack-app_GM1330123889.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/is-minecraft-java-free_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/minecraft-beta-free_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/coin-master-hack-tool-v1-9-download_GM406889139.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-minecraft-mods_GM479516143.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-roblox-passwords_GM431946152.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-tiktok-hearts_GM835599320.pdfIn PDF document text
- http://www.js100.com/uploads/ckeditor/files/free-outfits-roblox_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_off00004d0d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D0D	25468 bytes
SHA-256: `25ce38e0745dc472c53e233b120e1049ea6034f274ccbe56fbbff178f6a4bfc8`
`font_01_sfnt_off0000870e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x870E	3204 bytes
SHA-256: `8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa`
`font_02_sfnt_off00009212.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9212	19036 bytes
SHA-256: `abaaef8123abf70c91d1a0f07b1f9da735168a40db37009f502544eec5993ff1`

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