PDF malware analysis — malicious · 0864a4eb09137ff7

MALICIOUS

PDF

34.9 KB Created: 2021-06-22 05:54:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: b6c541fa4e859c380724e62eeaadabf0 SHA-1: 8fa612aba6133dcb5ca991574925498fceff5464 SHA-256: 0864a4eb09137ff77a5efdd69a2ab7741f3ae5ab5e6122674c49afb2a6458a57

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, that point to external resources. The primary URL, http://netcdn.co/app/406889139/coin-master-villages-game-hack, suggests a lure for game-related hacks or cheats. The presence of a ML_NYX_PDF_MALICIOUS firing and the sheer volume of external links indicate a high likelihood of this document being used for phishing or distributing malware. No scripts were extracted, but the document's structure and embedded links are indicative of a malicious intent to redirect users to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

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.
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/406889139/coin-master-villages-game-hack PDF link annotation
- https://www.hearcolors.com.mx/img/blog/files/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/download-roblox-clothes-free-online_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-hack-people-on-roblox-without-downloads_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-spin-link-free_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-drop-master-free_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/fake-free-robux-gui-troll_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/tiktok-free-2021-views_GM835599320.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-free-spins-link-2021-hack_GM406889139.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_off00003206.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3206	23224 bytes
SHA-256: `9b6428c4a3380b80d4906e5fde7c02c6e40ccaebc4c1b785a2ee8e65098e7239`
`font_01_sfnt_off00006645.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6645	18044 bytes
SHA-256: `b488c7aa93a7282600252f1c18b160acf3bdf236873997f00b2a69c8057441f1`

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