Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe94c6436ef4a9e1…

MALICIOUS

PDF

45.8 KB Created: 2021-05-17 04:02:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7b4740ae311ee195ea5a58bc56cc1b90 SHA-1: fa1b66698151de20be1ba0901da1967f769300ea SHA-256: fe94c6436ef4a9e12d734de8e4c44046f8217633f5406788e1729956124af129
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are SEO-optimized slugs pointing to external PDF files, indicative of a link farm. The primary URL, https://netcdn.xyz/app/431946152/offers-for-robux-game-hack, suggests a lure for in-game currency or hacks. The ML classifier also flagged this PDF as malicious with high confidence. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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 https://netcdn.xyz/app/431946152/offers-for-robux-game-hack
    • http://www.kendo.gr/images/coin-master-free-spin-link-app_GM406889139.pdf
    • http://www.kendo.gr/images/coin-master-free-stars_GM406889139.pdf
    • http://www.kendo.gr/images/free-robux-without-verify_GM431946152.pdf
    • http://www.kendo.gr/images/download-coin-master-apk-hacked_GM406889139.pdf
    • http://www.kendo.gr/images/how-to-get-20210-robux-for-free_GM431946152.pdf
    • http://www.kendo.gr/images/free-robux-hacker-us_GM431946152.pdf
    • http://www.kendo.gr/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://www.kendo.gr/images/robux-generators-that-actually-work_GM431946152.pdf
    • http://www.kendo.gr/images/how-to-get-free-robux-com_GM431946152.pdf
    • http://www.kendo.gr/images/robux-no-human-verification_GM431946152.pdf
    • http://www.kendo.gr/images/static-moonactive-net-free-spins_GM406889139.pdf
    • http://www.kendo.gr/images/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdf
    • http://www.kendo.gr/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdf
    • http://www.kendo.gr/images/hack-coin-master-app_GM406889139.pdf
    • http://www.kendo.gr/images/minecraft-education-edition-free_GM479516143.pdf
    • http://www.kendo.gr/images/coin-master-hack-spins-game-download_GM406889139.pdf
    • http://www.kendo.gr/images/coin-master-hack-app-ios_GM406889139.pdf
    • http://www.kendo.gr/images/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • http://www.kendo.gr/images/hackear-coin-master-sin-root_GM406889139.pdf
    • http://www.kendo.gr/images/coin-master-facebook-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004859.bin
e3706d9068052929d6d63bb75b5cb680efbcdbceecbc265a2c990143e8c37d1c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4859 27452 bytes
font_01_sfnt_off00008768.bin
10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8768 2880 bytes
font_02_sfnt_off00009152.bin
008daa7c923f0d18fdb9c83010d9a64072a053927c268ad9f22a1822577e7237		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9152 18012 bytes

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