PDF malware analysis — malicious · 6edaa6869588ab20

MALICIOUS

PDF

47.7 KB Created: 2021-06-03 16:34:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 5ce27865262361c94e982403271f17c3 SHA-1: 3c3c6266f505d5795cebf03df67a30115f8913b5 SHA-256: 6edaa6869588ab20e9d3af512c349afe53512e72b1061dbfb7053fd8bfcdaa33

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary malicious URL identified is https://netcdn.online/app/406889139/coin-master-free-spins-and-coins-daily-links-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to trick the user into navigating to a potentially harmful site, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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-spins-and-coins-daily-links-game-hack In PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-robux-accounts_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/rbx-free-robux_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-robux-safe_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-minecraft-client_GM479516143.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-hack-android_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-admin-roblox_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/roblox-devil_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-codes_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-free-coins-link_GM406889139.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_off0000522e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x522E	26124 bytes
SHA-256: `591b889e1041f54d7dfe5902272efa7021b3a53609d933c38dba767dc34634c4`
`font_01_sfnt_off00008b5d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B5D	3204 bytes
SHA-256: `8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa`
`font_02_sfnt_off00009661.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9661	18652 bytes
SHA-256: `e3d0f3d2cfc9c6a1690771b503077d618c720b070dec55624c93c27d11531b52`

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