PDF malware analysis — malicious · 3889ad495c9110c8

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 21:58:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: d5878c08cf6b064c026b6d6cef924f87 SHA-1: d9d67d8e6554162a87c680e40de6f44f0bdf77e9 SHA-256: 3889ad495c9110c8ea1889d5b54c9b8064421b1c68781623f4ad354b5eae5e48

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 0.9980

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 http://netcdn.tw/app/479516143/minecraft-xbox-360-free-download-code-game-hack PDF link annotation
- https://www.sarsen.net/uploads/files/files/free-robux-discord_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-2021-wiki_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/all-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/roblox-script-hacks_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-no-website-2021_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-get-free-robux-from-slingtv_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/libro-hacks-para-roblox_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-decals-for-roblox-work-at-a-pizza-place_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-get-robux-hack-on-phone_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-do-i-earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/can-i-get-minecraft-for-free_GM479516143.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/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-hack-roblox-prison-life-v2-02_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_off00003128.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3128	21956 bytes
SHA-256: `ca036dc3343be5db57ef00ba822c238f91ec88dab3aaa77a96128a6cdddb894f`
`font_01_sfnt_off0000618d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x618D	19688 bytes
SHA-256: `43ad2a227d4b371ba67af57b99e7f6a6af10e005219d52730f421fc1693d706f`

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