PDF malware analysis — malicious · a90dbe2e2835de4e

MALICIOUS

PDF

45.8 KB Created: 2021-05-17 04:07:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: e1634bc63391d1a5a61e4128be5f4623 SHA-1: 320d57195db5ed183cf1faf70578c604e160b237 SHA-256: a90dbe2e2835de4ef57a923ef15ecf46cde835a1c471beb44119e2ffdf5dd819

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free game hacks' to entice users to click on external links. The PDF contains a large number of embedded URLs, many of which point to other PDF files hosted on a seemingly unrelated domain, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://netcdn.xyz/app/406889139/google-coin-master-free-spins-game-hack, which likely serves as a redirector or hosts further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9432

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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/406889139/google-coin-master-free-spins-game-hack PDF link annotation
- https://www.psychotherapie-naturheilpraxis.de/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/minecraft-net-download-free_GM479516143.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/coin-master-hack-pro_GM406889139.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/roblox-login-hack_GM431946152.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/rape-simulator_GM431946152.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
- https://www.psychotherapie-naturheilpraxis.de/images/free-spin-coin-master-app-download_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_003_off00004e1c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4E1C	25044 bytes
SHA-256: `7d5f58fd11c424ff5b39da0c67be5a8890d433194e211262586e922fc9f8f989`
`font_01_sfnt_off00008688.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8688	2920 bytes
SHA-256: `601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7`
`font_02_sfnt_off000090a2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x90A2	18248 bytes
SHA-256: `d32188c22f9df4e49535359cc17236f14c93b7b5c7ebedc8928f30f104243849`

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