PDF malware analysis — malicious · 5c2e18c653c54980

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 03:27:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: da1f253b66d0133dffbecc776a71ea94 SHA-1: de61241048789cc1a82a6ae77b55c54a75ac51d7 SHA-256: 5c2e18c653c549804e6e4a3d4e09ffa7a13db92f2096dcc0acc62872b8fee8d5

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.co/app/431946152/how-to-get-free-premium-roblox-game-hack PDF link annotation
- https://www.tw-storage.com.tw/upload/files/roblox-free-online-without-download_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-roblox-characters_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-hack-root_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/roblox-hack-me_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/give-me-free-robux_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/robux-hack-sin-verificacion-de-humano_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/how-do-i-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-roblox-cute-hair_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/pig-master-coin-master-free-spin_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
- https://www.roblox.com/.IIn 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_off000031b0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31B0	21688 bytes
SHA-256: `00b9f6b93dc1bb4fe8bb2d271c18163be342db8d8cef2e01a2f8d48d78df7b2c`
`font_01_sfnt_off0000611f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x611F	19592 bytes
SHA-256: `8d0174b0934bd13f73c8324677ef321856a80226dce412d68411a4eff9948ea0`

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