Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd7a8ce90f45baa0…

MALICIOUS

PDF

42.6 KB Created: 2021-05-19 22:10:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4f38ab279828b9e14a143f0a04b803f8 SHA-1: d7592d4266c641d05fe12fd486cb5dd184001899 SHA-256: bd7a8ce90f45baa0cb6aa7f54877c9853b74fa22dfd2beba6dd3b12b9aecb9ec
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to game-related hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of a call-to-action phrase further supports a malicious intent to redirect users to potentially harmful websites or initiate downloads. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-village-cost-game-hack
    • https://library.sttbandung.ac.id/repository/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • https://library.sttbandung.ac.id/repository/coin-master-hacks-that-work_GM406889139.pdf
    • https://library.sttbandung.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • https://library.sttbandung.ac.id/repository/coin-master-hack-no-verification-no-signup_GM406889139.pdf
    • https://library.sttbandung.ac.id/repository/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdf
    • https://library.sttbandung.ac.id/repository/free-spins-on-coin-master_GM406889139.pdf
    • https://library.sttbandung.ac.id/repository/coin-master-spin-cheat_GM406889139.pdf
    • https://library.sttbandung.ac.id/repository/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdf
    • https://library.sttbandung.ac.id/repository/coin-master-free-spin-today-2021_GM406889139.pdf
    • https://library.sttbandung.ac.id/repository/cm-free-spins_GM406889139.pdf
    • https://library.sttbandung.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://library.sttbandung.ac.id/repository/pubg-uc-180_GM1330123889.pdf
    • https://library.sttbandung.ac.id/repository/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdf
    • https://library.sttbandung.ac.id/repository/free-spins-for-coin-master_GM406889139.pdf
    • https://library.sttbandung.ac.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • https://library.sttbandung.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdf
    • https://library.sttbandung.ac.id/repository/100-free-spins-coin-master_GM406889139.pdf
    • https://library.sttbandung.ac.id/repository/coin-master-free-spins-for-today_GM406889139.pdf
    • https://library.sttbandung.ac.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdf
    • https://library.sttbandung.ac.id/repository/how-to-hack-to-get-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c1f.bin
cfca783b2afc7a997b82ff82ea06cfcdc4ba4872670535a522ad640348fbdb07		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C1F 25504 bytes
font_01_sfnt_off000084a1.bin
a8028c0297769aa7dba6e0a54b0a1dc6e5838f70d2f821663f5d8e8c2692d7c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84A1 18044 bytes

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