PDF malware analysis — malicious · d545b5000db4123d

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 05:37:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 0e9bd3f7bb405aa446ece708291f579c SHA-1: 87c9eb129f22209b63e4ff0e9197d0754de359e1 SHA-256: d545b5000db4123dd859cfa1f9657b6f66e56f9f05a245e71fc6c207cdc9474e

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

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/431946152/roblox-apocalypse-rising-hack-game-hack PDF link annotation
- http://www.jsvillas.com.tw/assets/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/free-bird-roblox-id_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/games-cheat-engine-works-roblox_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/free-robux-no-human-verification-2021-ipad_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/best-way-to-get-robux_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/rbx-free-robux_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/robloxfun-com-generator_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/how-to-hack-all-roblox-games_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/bux-free-robux_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/robux-now_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/roblox-premium-free_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/free-roblox-womens-face_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/freer-pro-tiktok_GM835599320.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/working-greasyfork-robux-hack_GM431946152.pdfIn PDF document text
- http://www.jsvillas.com.tw/assets/files/flood-escape-roblox-hack_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_off00003228.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3228	22700 bytes
SHA-256: `5b6813a99893ddec03db06ba80e7242fd31a6e863fff0450ee8b8ca13881bf5d`
`font_01_sfnt_off000064c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64C6	19132 bytes
SHA-256: `89b3c6f78ad9a233c40c5814635efca93e06110ce3843f8feb3308563d35be6a`

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