PDF malware analysis — malicious · 17a124c29cd6f4ff

MALICIOUS

PDF

40.6 KB Created: 2021-05-31 04:53:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 0ae8cdf3521c94d755fcc8d6443068bb SHA-1: 4cdc88dbb1650634cf7e56f31a2b3d92c9c96729 SHA-256: 17a124c29cd6f4ffd8bca582aa2473b61975a86e46c1b84295f7267f1b16f2e9

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing indicating it links to a 'free generator / game hack' redirector. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-paying-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering lure designed to redirect users to potentially malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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 https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-paying-game-hack PDF link annotation
- https://www.amengineering.it/wp-content/uploads/fsqm-files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.amengineering.it/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
- https://www.amengineering.it/wp-content/uploads/fsqm-files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.amengineering.it/wp-content/uploads/fsqm-files/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
- https://www.amengineering.it/wp-content/uploads/fsqm-files/freer-pro-tiktok-fans_GM835599320.pdfIn PDF document text
- https://www.amengineering.it/wp-content/uploads/fsqm-files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- https://www.amengineering.it/wp-content/uploads/fsqm-files/minecraft-free-online_GM479516143.pdfIn PDF document text
- https://www.amengineering.it/wp-content/uploads/fsqm-files/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
- https://www.amengineering.it/wp-content/uploads/fsqm-files/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://www.amengineering.it/wp-content/uploads/fsqm-files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.amengineering.it/wp-content/uploads/fsqm-files/roblox-script-hack_GM431946152.pdfIn PDF document text
- https://www.amengineering.it/wp-content/uploads/fsqm-files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://www.amengineering.it/wp-content/uploads/fsqm-files/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
- https://www.amengineering.it/wp-content/uploads/fsqm-files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.amengineering.it/wp-content/uploads/fsqm-files/free-college-textbooks-tiktok_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
`stream_002_off00003e66.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3E66	25984 bytes
SHA-256: `f6568cc4796bea7be4016398572be77a5e85d14a0ab48fd2df7078dedc6c8bb6`
`font_01_sfnt_off000078db.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78DB	19616 bytes
SHA-256: `cf429e2e91354d73b6f0728fc312d6ff4bad20be80a5ba6db32adcb01c969c4a`

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