PDF malware analysis — malicious · 1fba6f588342c2e4

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 12:00:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 81312ca61c636929579923c6b1a17a44 SHA-1: e343a6ab652f5209ef26c3f810ce9446572329bc SHA-256: 1fba6f588342c2e42c53163e92cdd500f3942232ba5b2820f0b68bd2156b2f46

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free game hacks' and 'generators' to entice users into clicking embedded links. These links redirect to a large collection of other PDFs, forming a link farm designed to improve search engine rankings for malicious content. The primary URL http://netcdn.tw/app/479516143/was-minecraft-ever-free-game-hack is a clear indicator of this malicious redirection scheme.

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.tw/app/479516143/was-minecraft-ever-free-game-hack PDF link annotation
- https://www.hearcolors.com.mx/img/blog/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/site-de-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/prison-royale-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/minecraft-client_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/roblox-owo-t-shirt-free_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/shark-attacke-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-robux-khaos_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-coins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/minecraft-esp_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/roblox-com-free_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_off0000313c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x313C	22432 bytes
SHA-256: `8bd4facfa1cba10d0fe55fe29f0a2c6d5755d6c026bd5a5fdb08c8b3ef1beda0`
`font_01_sfnt_off000062d2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62D2	18168 bytes
SHA-256: `dd30117a17675e2a95f45316c6563603f059e6e4f2122a5e89a28a065fa7a6d6`

Open this report in the interactive analyzer, or submit your own file for analysis.