PDF malware analysis — malicious · 1656fdc79edcacc3

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 05:53:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 81779c4bb4a1ecb3aed24eb823f9783e SHA-1: 08bf71e397f5a9ee00710799815b86c1c72e628f SHA-256: 1656fdc79edcacc3540eeb43bc31a08c12c727c0065df91aae9386ffc0abd444

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.tw/app/479516143/noob-vs-pro-vs-hacker-vs-god-minecraft-game-hack PDF link annotation
- https://www.jjautomation.in/uploaded_files/userfiles/files/greenwood-town-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/hack-roblox-counter-blox_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/descargar-roblox-hackeado_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/free-minecraft-com_GM479516143.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/cheat-on-lumber-tycoon-roblox_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/bux-life-free-robux_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/installer-roblox-hacker-sur-pc_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/roblox-games-free-play-online_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/fake-free-robux_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/free-robux-real_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/jailbreak-free-money-roblox_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/free-spins-coin-master-facebook_GM406889139.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/cheat-codes-for-dungeon-quest-roblox_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master-cheats_GM406889139.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/hack-to-train-railway-roblox_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_off000031eb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31EB	21612 bytes
SHA-256: `fbdf469ce56b1c9b06c19fb2460b8d6463c69f3e4be527aed4954aa61d5d089a`
`font_01_sfnt_off0000614f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x614F	18788 bytes
SHA-256: `cca5c8335eb7dad86f4843ad1de19f84038aa266d8c3ffdfef6d5eea3fe15bc0`

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