PDF malware analysis — malicious · 6fac3ec44f8fb61e

MALICIOUS

PDF

47.6 KB Created: 2021-05-14 18:04:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 6784c33450c7175a45773becfbaded89 SHA-1: fe38b918c313107baeea14b982d9a13828be1b3c SHA-256: 6fac3ec44f8fb61e89c53a89f97daf964cc348b54ca03d61adc458fd8d73a8fe

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, 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 0.9013

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/431946152/free-robux-no-gift-card-game-hack PDF link annotation
- http://s-punkt-objects.de/images/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
- http://s-punkt-objects.de/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://s-punkt-objects.de/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
- http://s-punkt-objects.de/images/robux-hack-tools_GM431946152.pdfIn PDF document text
- http://s-punkt-objects.de/images/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
- http://s-punkt-objects.de/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://s-punkt-objects.de/images/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
- http://s-punkt-objects.de/images/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
- http://s-punkt-objects.de/images/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
- http://s-punkt-objects.de/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
- http://s-punkt-objects.de/images/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://s-punkt-objects.de/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
- http://s-punkt-objects.de/images/coin-master-daily-link_GM406889139.pdfIn PDF document text
- http://s-punkt-objects.de/images/roblox-demon_GM431946152.pdfIn PDF document text
- http://s-punkt-objects.de/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
- http://s-punkt-objects.de/images/minecraft-free-download_GM479516143.pdfIn PDF document text
- http://s-punkt-objects.de/images/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
- http://s-punkt-objects.de/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
- http://s-punkt-objects.de/images/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
- http://s-punkt-objects.de/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.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
`font_00_sfnt_off00004b0e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4B0E	27912 bytes
SHA-256: `8ac69952a640b6a9d91e56e6be64868fefdd9278304612cff682d9735cc80718`
`font_01_sfnt_off00008c91.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C91	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off0000967b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x967B	18640 bytes
SHA-256: `5e2a3e67d4e6faa48e47b93c69738121aad1fd6f7e815cfd3538255806571323`

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