PDF malware analysis — malicious · 67b26a2931cc7055

MALICIOUS

PDF

34.6 KB Created: 2021-06-19 17:09:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 9d7310a742c7aa756401ca746e29e3bc SHA-1: 374da6279d0bbe0c2cd9597d7393eb257ab31533 SHA-256: 67b26a2931cc70553bfd36f7382417261bc7a61e18386ab35eef8bbea8ef3cf2

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document uses a lure related to 'free Robux' and 'game hacks' to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/free-robux-clibait-game-hack, is identified as a high-risk redirector. The document's content and heuristics strongly suggest a phishing or scam attempt designed to lead users to a malicious site.

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/free-robux-clibait-game-hack PDF link annotation
- https://www.cow-style.com.tw/upload/files/where-to-get-robux_GM431946152.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/how-to-noclip-in-roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/how-to-get-free-items-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/robux-download_GM431946152.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
- https://www.cow-style.com.tw/upload/files/rbx-free-robux_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_off00003066.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3066	22368 bytes
SHA-256: `86f12b8e1d11f0fab2b3bcaa66955c7b206faebcbfa7163da7cef0f6852f685e`
`font_01_sfnt_off0000623b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x623B	19012 bytes
SHA-256: `ce87db9b2d6b34855cc930243d3efb4009f452bf54330b95084c544673865164`

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