PDF malware analysis — malicious · 21821a6f2c1c8ab0

MALICIOUS

PDF

47.0 KB Created: 2021-06-01 16:21:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23

MD5: 74de4c62d406d4ced0f8819d5fa94726 SHA-1: 0ee2799f3af50a3d2a9db150a841b8ad2c96783a SHA-256: 21821a6f2c1c8ab0e1ed8a3e7bab927e93ad4662cc04bf3059b1dba0f24a1477

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors, specifically disguised as 'game hack' or 'free generator' lures. The primary redirect URL is https://netcdn.xyz/app/431946152/what-does-the-cheater-cage-do-in-roblox-game-hack. This indicates an attempt to lure users to malicious sites, likely for further exploitation or malware download. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9832

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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.xyz/app/431946152/what-does-the-cheater-cage-do-in-roblox-game-hack In PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/free-earn-robux_GM431946152.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/roblox-hack-kick-gui-juin-2021_GM431946152.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/get-free-robux-nowcom_GM431946152.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/free-robux-without-quizzes_GM431946152.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-with-promo-codes_GM431946152.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/funny-free-roblox-outfits_GM431946152.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/free-roblox-gift-card-codes-2021-march_GM431946152.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/free-roblox-boy-hair-not-a-model_GM431946152.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/how-to-get-2021-free-robux-2021_GM431946152.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/hacking-things-to-hack-roblox-gamemodes_GM431946152.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/cheats-on-roblox-money_GM431946152.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/legends-of-speed-roblox-hack_GM431946152.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
- https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-apple-phone_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_off00004ef2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4EF2	30340 bytes
SHA-256: `ea4a1faf4f653b7246952dfc9679ac3ea56d4f984ac779407e1afae75493460e`
`font_01_sfnt_off00009324.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9324	18936 bytes
SHA-256: `0cc34b3a8ded42c19cee68d6eb54feadf3fc7247fbc26809143d5589f24f6fdc`

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