PDF malware analysis — malicious · 248d02c32c90aadf

MALICIOUS

PDF

42.2 KB Created: 2021-06-03 14:54:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 494aaa5754995f1551383ba966e39b2f SHA-1: 9cc0f42056d67e5b4aba6cf620b0d231976f2553 SHA-256: 248d02c32c90aadf0dff66e6b6123fb3a544eb68bfe325c83abf90118e221553

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 0.9988

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.online/app/431946152/game-kit-free-800-robux-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/free-roblox-toys_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-minecraft-account_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/the-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-verified-on-tiktok-for-free_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_off0000481b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x481B	24808 bytes
SHA-256: `d7fd4fd6c762f705775c73c4ce57de3d187dd4ae66c3be2f3314ffd4f3af6e07`
`font_01_sfnt_off0000809e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x809E	19108 bytes
SHA-256: `a5d184246886da3d24c883e2d23a53eb712e8e772feb134be571887e2725124b`

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