PDF malware analysis — malicious · 9b299fcd226ee778

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 02:23:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: c23f40c70e3cdcd101996088ee0ef0d0 SHA-1: 81801f673a7805401f388c3a06de3ace24c16bc2 SHA-256: 9b299fcd226ee778fcc7e28682c25cffc59bc56c7483253b1669e094c79eaee3

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on luring users with game-related hacks and free currency. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a malicious intent to redirect users to potentially harmful sites. The document body and extracted URLs reinforce this, pointing to sites offering 'free spins' and 'game hacks', which are common pretexts for phishing or malware distribution. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/free-spins-for-coin-master-2021-game-hack PDF link annotation
- https://www.cgalgeria-dubai.com/userfiles/files/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/pubg-uc-website-india_GM1330123889.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-things-on-roblox_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/synapse-x-free-download-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/cute-things-to-wear-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-robux-app-real_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-robux-website_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/roblox-free-candy-van-script-pastebin_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/robuxhub-net_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/blox-fish-free-robux_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_off00003144.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3144	22304 bytes
SHA-256: `633685cd97c0a117476fcc6ee82fb11ba53f41944729d456462af6dfb3d205c6`
`font_01_sfnt_off00006312.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6312	18576 bytes
SHA-256: `fb0fb59ed2c1a9034e606a4b9af272ef40c933264071e94cfd5fd7ab3c408864`

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