PDF malware analysis — malicious · cfda8e7d7c250892

MALICIOUS

PDF

46.7 KB Created: 2021-05-10 20:35:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 8d8ff822762864a1d3f9d6d1631d1d4d SHA-1: 8871cd86de7ac8af427396d5fdd371124eb221d8 SHA-256: cfda8e7d7c250892860ab8e83234958a699b9d7830c5aeb894558f5dce5719f0

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure for 'free Robux' and game hacks, directing users to malicious websites. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a visual download button further supports a malicious intent to trick users into visiting potentially harmful sites. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

Machine Learning

Nyx PDF Classifier malicious score 0.9977

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/roblox-free-robux-game-hack PDF link annotation
- https://www.midrarreservations.com/uploaded_files/userfiles/files/download-hack-coin-master_GM406889139.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/minecraft-beta-free_GM479516143.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/hack-coin-master-apk-32_GM406889139.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
- https://www.midrarreservations.com/uploaded_files/userfiles/files/roblox-hacked-version-download_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_off00004dc9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4DC9	30248 bytes
SHA-256: `f4675f3c6d07c6a3c61ff39220b335afccb75f52cc55d9d0dae35b8a442e1570`
`font_01_sfnt_off00009555.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9555	18088 bytes
SHA-256: `03c92d59c548fbfdae08874221752d30f8caaed88781636bf7d18542e7c5fe52`

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