PDF malware analysis — malicious · c773026fe15d09b7

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 15:05:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 6532fcd5e54444b953d41daedffaacf5 SHA-1: aa19b2c21e66d66d4ddc98aba489987659272a86 SHA-256: c773026fe15d09b7583d9a15b4775b9e60c3f82c941b718eb9cfac5e1f5d23bd

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free Robux' and game hacks to entice users. It contains an embedded URL that redirects to a site offering a 'free generator / game hack'. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or malware distribution attempt.

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.co/app/431946152/free-robux-app-real-game-hack PDF link annotation
- https://www.advancissurgical.com/uploads/files/files/coin-master-real-hack_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/rbx-claim_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/youtube-roblox-pokemon-brick-bronze-free-money_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-hacking-website_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-download-play-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-website_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-free-play_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/edit-roblox-game-code-cheat-engine-2021_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-codes_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-natural-disater-hacks_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/notoriety-hack-script-for-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-not-clickbait_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.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_off000030e9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30E9	22308 bytes
SHA-256: `9c1baae621ec1b1b3b86d033653551c5225c3aa579ea53ad3da7263d59a7e86f`
`font_01_sfnt_off0000628f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x628F	18968 bytes
SHA-256: `40e70f9896c1d2dd73ce0a34c726294904c345e0ceccadb112d3bcb1bf7365a7`

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