Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1ddd8f17c388ad3…

MALICIOUS

PDF

30.3 KB Created: 2021-05-11 20:01:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8d95967ee36e4a1a9ff27c30385df885 SHA-1: ee95578c8f75f96d8659d48727989251c3aa4a19 SHA-256: a1ddd8f17c388ad3e3708626790384689be800db47d7786e7671e816e8d14f83
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are related to game cheats and free virtual currency, indicating a likely phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports this assessment. The document's content and structure suggest it is designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 3

  • 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.
  • 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/free-robux-without-verification-or-survey-game-hack
    • https://pa-pangkalpinang.go.id/images/coin-master-daily-free-spins-link-2021-today_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-free-spins-app_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-hack-app_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/how-to-hack-coin-master-without-root_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/how-to-get-free-robux-for-kids_GM431946152.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-cheats-2021_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/free-shirt-roblox_GM431946152.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-free-spins-youthnow_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://pa-pangkalpinang.go.id/images/how-to-hack-people-in-roblox_GM431946152.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-hack-2021-download_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/instant-robux_GM431946152.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-daily-free-spins-link_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/free-spin-coin-master-hack-2021_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/how-to-hack-coin-master-ios_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/coin-master-free-coins-spins_GM406889139.pdf
    • https://pa-pangkalpinang.go.id/images/free-robux-hack-no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004866.bin
eb4e0388f9639b14fca35a39609136efbbf506940a20b23006bb6e10200fce5f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4866 25024 bytes

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