PDF malware analysis — malicious · 52bdca32a8a4a412

MALICIOUS

PDF

50.7 KB Created: 2021-06-03 19:54:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 838a581fa0e9ab53af3fc705a6e638a4 SHA-1: 55c8f83cd8d83bc4f7054629c9d727b38eb4cece SHA-256: 52bdca32a8a4a4129c9aa94c2ec8d71547e674e71801f45cce85089644f80c46

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 0.9779

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-just-enter-username-game-hack PDF link annotation
- http://www.rewaqousha.net/userfiles/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/tiktok-free-mode_GM835599320.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/roblox-free-bundles_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/toolbox-apk_GM479516143.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/how-to-get-free-premium-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
`font_00_sfnt_off0000531d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x531D	28004 bytes
SHA-256: `7ff33a8e8fb41a82b4b18c56b15dd3cefb6ee598450a3983d8485fe75f2418ad`
`font_01_sfnt_off000092ee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x92EE	6100 bytes
SHA-256: `f866077ce59d6ea276f75e4af76daa2aab5f3a1a679df144776123d85664d65c`
`font_02_sfnt_off0000a179.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA179	18960 bytes
SHA-256: `ad194f5984d8cbd7c817d1b512f86f024f40bf30beebdf7d12c6ff62fc849400`

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