PDF malware analysis — malicious · 024b9171580d25ff

MALICIOUS

PDF

35.8 KB Created: 2021-07-03 18:34:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 6a12508ea48c5042d4a8c2ee624cd736 SHA-1: 8c84c60fb438a1e8107fbf3b9e29f0372f7ab40e SHA-256: 024b9171580d25ff2caf2dfb49774c5ff4af5b77599e046d657938a649659cdc

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/406889139/i-need-more-free-spins-on-coin-master-game-hack PDF link annotation
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-hack-someone-on-roblox-and-steal-theyre-robux_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-hack-roblox-using-xcode_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-ben-10-universal-showdown-cheats-codes-2021_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/get-free-robux-now_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-group-roblox_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/hack-roblox-ccv3_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-decals-for-roblox-work-at-a_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-executors-for-roblox_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-hack-site_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/claim-free-robux_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-code-on-how-to-get-clothes-for-free_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_off000033c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33C2	23604 bytes
SHA-256: `7214e177aec1b3a1ce41617f0be6395bee2fb079d004bd297726151ee0032281`
`font_01_sfnt_off00006915.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6915	18348 bytes
SHA-256: `2261165b7ab8c5223608571b0589221b0e9296972d0056a3971024e6458eec96`

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