PDF malware analysis — malicious · 4d8507c117f955c5

MALICIOUS

PDF

46.1 KB Created: 2021-06-03 05:05:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: e27684add0794dff8e8c49ff39f069a7 SHA-1: 7bd11ef8a3d1b7dd998be94eeb2e5a8cd6ae3d23 SHA-256: 4d8507c117f955c52e283cd19f1b6e6896bc1ff4ae770748571a45fc5cd282d0

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 0.9864

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/431946152/free-robux-no-download-game-hack PDF link annotation
- https://www.wearmyspex.com/uploaded_files/userfiles/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/free-tiktok-followers_GM835599320.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/free-robux-script_GM431946152.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/getrobux-info_GM431946152.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/robuxy-com-generator_GM431946152.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/is-tiktok-free_GM835599320.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
- https://www.wearmyspex.com/uploaded_files/userfiles/files/free-robux-com-roblox_GM431946152.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_off000054e0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x54E0	25624 bytes
SHA-256: `1f7ab3dc14282f866894bc32aa301d5f290d2d56cfeb8a9164d921ac75a170d8`
`font_01_sfnt_off00008ff1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FF1	18824 bytes
SHA-256: `a83584a15d83770571e134086905248a9fe783ccc3b424d06d308178a7ec7f42`

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