Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe4ece64ad52fb7b…

MALICIOUS

PDF

42.9 KB Created: 2021-05-10 22:54:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: da9d470efb52a925f16cc8c399b6e724 SHA-1: c2db7e5c72147ecdc684081a470f537f4f5fa934 SHA-256: fe4ece64ad52fb7b1c555b905aa859b3d814a7293aad45d72bf9f48af0efbfb2
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF files, suggesting a link farm or content aggregation for malicious purposes. The document body and extracted URLs indicate lures for free game items or trials, such as Minecraft or Roblox. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a link farm heuristic supports a high confidence assessment.

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/479516143/minecraft-java-edition-free-trial-game-hack PDF link annotation
    • https://vierabyragazze.com/upload/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-imagine_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/can-i-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/get-robux-today_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-hack-roblox-to-get-free-robux_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.

FilenameKindSourceSize
stream_003_off00004b62.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B62 26644 bytes
SHA-256: 5e21a4b7ef0dac1e1de5848346d80111b2e9abf9715ce9ed02ef2cec070ba7d2
font_01_sfnt_off00008585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8585 18240 bytes
SHA-256: 1be29b22a500e2a60a7236cc7f3818504a778037c129f908a3826a58d12b939a

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