PDF malware analysis — malicious · d60c0f1c3da90eff

MALICIOUS

PDF

34.6 KB Created: 2021-06-27 00:00:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 58e11cc6424d0f3198c0413fca2b01c4 SHA-1: 8972965b14a6c9046d763784b57cc1d8dc1257c7 SHA-256: d60c0f1c3da90eff0c0656f7e0e0a8cdad7d7b6ef1305d96560aa54544c9e1a1

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a high number of external links, many of which are SEO-optimized and point to game hack generators and free item lures. The primary URL, http://netcdn.co/app/431946152/free-robux-gift-cards-2021-25-8-game-hack, is likely a redirector to a malicious site or a download. The document's structure and content suggest it's part of a link farm designed to attract users with promises of in-game currency or cheats, ultimately leading them to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-robux-gift-cards-2021-25-8-game-hack PDF link annotation
- https://www.sarsen.net/uploads/files/files/why-old-roblox-accounts-and-free-items_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-today_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/freerobux-hack-us_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/hack-minecraft_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/tiktok-likes-free_GM835599320.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/exploit-that-works-roblox-free_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/google-roblox-games_GM431946152.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
`font_00_sfnt_off00002e79.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E79	22008 bytes
SHA-256: `b94b93decbfeb6a9ffb71ec4c5aa272378d36c5221bd54de310a7a6d12670a58`
`font_01_sfnt_off00005f47.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F47	19860 bytes
SHA-256: `fb8ee7bfb1a9c2ee49e4769c9fc3aa4869e7a85f45c298f344d70a6887281f30`

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