PDF malware analysis — malicious · 48831691520c6ac4

MALICIOUS

PDF

34.0 KB Created: 2021-06-19 00:57:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 6eb2f61a557e350359eec1c7b08fa83c SHA-1: b9c01c3d36108a3e2db36c7eb2476a6fce72b0e3 SHA-256: 48831691520c6ac44f1fd581378619a21dcddcfb4e06af617f624fadcd28e729

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks, specifically Roblox, to trick users into clicking a link. The embedded URL, http://netcdn.co/app/431946152/roblox-workspacve-hacks-game-hack, redirects to a malicious site, likely to download a second-stage payload. The ML classifier also strongly indicated maliciousness.

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/roblox-workspacve-hacks-game-hack PDF link annotation
- https://htdvn.com/public/upload/files/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
- https://htdvn.com/public/upload/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/pokemon-go-free-walk-ios_GM1094591345.pdfIn PDF document text
- https://htdvn.com/public/upload/files/pubg-uc-sale_GM1330123889.pdfIn PDF document text
- https://htdvn.com/public/upload/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/breaking-point-hacks-roblox_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-robux-outfits_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/speed-hack-download-roblox_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-free-hood_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://htdvn.com/public/upload/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
- https://htdvn.com/public/upload/files/earn-free-spins-for-coin-master_GM406889139.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_off00002d5e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D5E	22436 bytes
SHA-256: `924c903f662ff8f96b0df8f4065d3775c998130d61ecbc74a45fb68d687e8ef8`
`font_01_sfnt_off00005f49.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F49	19144 bytes
SHA-256: `12839f746c117eab4f97656bef2c2fe591f80adb64108de52c7b326e8e33607d`

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