PDF malware analysis — malicious · e77f3a6c0637702a

MALICIOUS

PDF

42.8 KB Created: 2021-05-15 04:07:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 0b91aa0cfe9f1786bee282518fd0fd6f SHA-1: bb0923d1e0e7cc54b87d207777db3b288dadc066 SHA-256: e77f3a6c0637702a33cb2bf17bcf534a4e611e4f5e0ed88d44c7894cd77eebdf

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 0.9971

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/479516143/minecraft-bedrock-edition-free-game-hack PDF link annotation
- https://www.mentalhealthnow.co.uk/uploads/files/files/give-me-robux-now_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/robux-free-online_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/wurst-hacks_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/robux-boost_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-free-item-codes_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/send-me-500-2021-spins_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_off00004b57.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4B57	25284 bytes
SHA-256: `f941ad076b16673f6ff799758c816b129895af923c1ec719ccfea6304ddf4da2`
`font_01_sfnt_off00008540.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8540	18268 bytes
SHA-256: `0b29718dce26c4d1fb8eff562362f22d55d4276ac23c5c88aa1b07f7376859fd`

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