PDF malware analysis — malicious · 1377d64dab824f5a

MALICIOUS

PDF

34.8 KB Created: 2021-07-09 00:49:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 9a47018d9088cad5a377f11443c4d300 SHA-1: b4ec5580ea0727d925ff4f3a0b298cf19ee971b6 SHA-256: 1377d64dab824f5a1d2dcf65e483aafe4618df73604f74eb89516b818ed6dd62

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/good-free-minecraft-server-hosting-game-hack PDF link annotation
- https://www.donjastubica.hr/files/coin-master-hack-extension_GM406889139.pdfIn PDF document text
- http://www.donjastubica.hr/files/roblox-ro-goul-hack-cheat-engine_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
- https://www.donjastubica.hr/files/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/roblox-girl-clothes-for-free_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/doge-roblox-hat-free_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/roblox-free-login_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/synapse-download-roblox-free_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/tiktok-likes-free-trial_GM835599320.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-robux-obbies-that-work_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/dance-routine-hack-for-roblox-high-school_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_off000031ec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31EC	22936 bytes
SHA-256: `12af05eff9c5376faa6b8beec54d88e3c018aed60f8b1e8377e03ebc2feb6c4b`
`font_01_sfnt_off0000656b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x656B	18284 bytes
SHA-256: `7289302ae6250539789b9217bcc68894f0328a970bf5d67cc3f1b282cc8d95f9`

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