PDF malware analysis — malicious · df7bae86d26a509c

MALICIOUS

PDF

45.9 KB Created: 2021-05-14 21:03:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: aa7c5e7b146869a71b431c56717d59c0 SHA-1: 7ca38a49c392a33573eaf453b1d076e38915ebb2 SHA-256: df7bae86d26a509c6f980700b096c3b8e1676a4da9989148c1b1c9220b4076eb

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a prominent link and document body text promoting a 'free Robux generator' and 'game hack', which is a common lure for malicious content. The link redirects to a suspicious domain, indicating a phishing or scam attempt. The ML classifier also flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9432

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/431946152/free-robux-generator-2021-no-survey-game-hack PDF link annotation
- https://ourlady-elearning.com/userfiles/files/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/coin-master-60-spins_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/install-coin-master_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/minecraft-apk-114_GM479516143.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/roblox-hack-game_GM431946152.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/hack-coin-master-ios_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
- https://ourlady-elearning.com/userfiles/files/rblx-city-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_003_off00004b32.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B32	24892 bytes
SHA-256: `1dc138e22ac6d5dde632488f4aa4b78a3c4f01f38f1a4909fa5f52f519d10c6c`
`font_01_sfnt_off000084e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84E5	2844 bytes
SHA-256: `a66b570a908761b39e6d9e18bcb667c353840a86c6a7db528f79d01abe6b23a1`
`font_02_sfnt_off00008e8b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E8B	19044 bytes
SHA-256: `6a3befe032ce85dfab02daa9542f37d979e32cd852f1a969db8cf02301732b57`

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