PDF malware analysis — malicious · ffdbf1c50a3e543e

MALICIOUS

PDF

34.2 KB Created: 2021-06-26 05:24:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 151f9c109a5a01a3d03e35d328556025 SHA-1: 4bb58d6ef873e9001a137fca6fadb9b7e33be4f0 SHA-256: ffdbf1c50a3e543e50a76674f868580f8931de9aae238546c3337816f78b1d9c

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 0.9980

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-games-in-2021-game-hack PDF link annotation
- https://www.advancissurgical.com/uploads/files/files/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-coin-master-glitches_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/fire-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-hairstyles-on-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coin-master-hacks-android_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-roblox-accounts-for-robux_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/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-roblox-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/100-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/rbx-claim_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_off00002f2d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F2D	21944 bytes
SHA-256: `328ff971dc91150be4fd1f11e245308ece2a9b6fa89624ba1ed4b19de2aa3bf1`
`font_01_sfnt_off00005fbf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FBF	19380 bytes
SHA-256: `661c05b86c6f7da7f8c82ac379c020dc8d3ccda90840bc06bab86c01b9587a44`

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