PDF malware analysis — malicious · 5a6cab97eb56621c

MALICIOUS

PDF

46.5 KB Created: 2021-06-03 16:13:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: f1a07e3276cb7495f36a966a0721605f SHA-1: de3504ca85d849e1573c43418ddbaf76deaf9c36 SHA-256: 5a6cab97eb56621c9a604933923d954b26d6cb7a1fc9fdf0dd8c5d32d67eff71

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 0.9748

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/406889139/coin-master-free-food-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/earn-robux-online_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-inappropriate_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-money-hack_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-spins-coinmaster_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-hack-xyz-apk-download_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000521e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x521E	24820 bytes
SHA-256: `8698a468cd4e7058fcb7aa26e4aa4dec54b0905ca49357b2e0ba7978f0f6a69f`
`font_01_sfnt_off00008a39.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A39	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off00009423.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9423	17884 bytes
SHA-256: `dce98ab1a9f6331dfaabbdd57dacdba92c66b57249d10e9c2a1df39138c2a47b`

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