PDF malware analysis — malicious · 50bc81b1ca9b4db3

MALICIOUS

PDF

42.8 KB Created: 2021-06-03 20:04:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 09ceb04e8b0a111185fdeb0fcf0e89b0 SHA-1: eb36dabe6a8eee877607f0c95f48a682fadc5e58 SHA-256: 50bc81b1ca9b4db3c1aac9d3db75d36d2ef5b8c164fec01a48ff4b0e59155939

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 0.9874

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/406889139/spin-and-coin-game-hack PDF link annotation
- http://www.rewaqousha.net/userfiles/files/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-cheats-free_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-on-facebook_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-links-coin-master_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/roblox-girl_GM431946152.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
- http://www.rewaqousha.net/userfiles/files/free-robux-clothes_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
`stream_004_off00004e3f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4E3F	24640 bytes
SHA-256: `b3caf0ea86902a20c2b3a08bd831ae5c31508191787c3c792663c4f427ef8fc2`
`font_01_sfnt_off000086ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86AB	17564 bytes
SHA-256: `1aa6e9a1125ffd8bd76459eac5be06ac3adbb2b38f3f38867c691e3d452af4d4`

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