PDF malware analysis — malicious · 9057f0a5d96053e9

MALICIOUS

PDF

34.8 KB Created: 2021-07-09 18:28:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: f57be3e29e4b4cd447ee630b473cac08 SHA-1: bf48d5e8b3e27e095a49845f3131225a53245ce3 SHA-256: 9057f0a5d96053e99b37d459af7b7c641b5e4fc72ee5a7062b49b2e66ad8eb39

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a game hack lure to entice users to click on a malicious URL. The heuristic firings indicate the PDF links to an external URI disguised as a game hack, and the ML classifier strongly flags it as malicious. The embedded URL, http://netcdn.tw/app/406889139/coin-master-apk-hacked-3526-game-hack, is likely a redirector to a second-stage payload.

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.tw/app/406889139/coin-master-apk-hacked-3526-game-hack PDF link annotation
- https://ourlady-elearning.com/userfiles/files/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/give-me-robux-now_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-robux-march-2021_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-robux-co_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/websites-that-give-you-robux-for-free_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/coin-master-daily-spins_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
`font_00_sfnt_off00003150.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3150	22340 bytes
SHA-256: `61366582e62a5ff61e3fc9769ea3f660a492080a6816cc653adf1ce6d509b670`
`font_01_sfnt_off00006314.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6314	18952 bytes
SHA-256: `cc64386860e28c7a5bda04069eb4bd080ed1959d90d23f8bc3188d8a17878c18`

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