Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d9f1dced2ed87ff…

MALICIOUS

PDF

43.2 KB Created: 2021-05-19 08:31:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3f62081a28464276f653994865576a73 SHA-1: 54f84f6c55b661ea6ce41f582778fbe608abd8d2 SHA-256: 4d9f1dced2ed87ff736d20c5bd5a9511056ed3de3fe073d07e9876f1e4eed121
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, pointing to websites offering game cheats and hacks. The document body also contains a primary URL related to Pokemon Go rewards, suggesting a lure for users seeking in-game advantages. The presence of a large number of external links and the ML_NYX_PDF_MALICIOUS firing indicate a high likelihood of this document being used to distribute malware or lead users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/1094591345/pokemon-go-free-quest-rewards-game-hack PDF link annotation
    • http://eltisstudio.sk/images/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://eltisstudio.sk/images/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://eltisstudio.sk/images/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/static-moonactive_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-robux-real-working_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_off0000474e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x474E 26652 bytes
SHA-256: 147071eb16ceb2eefb0224448a680c963497031d219ba6c242d95a9a133efa00
font_01_sfnt_off000084d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D4 18812 bytes
SHA-256: f222ea5ae41e8aa6a111b18f80b9e27e53973a1f558e5a3cf6b0c815f40e22bd

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