Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ba73ab27c6b9324…

MALICIOUS

PDF

42.1 KB Created: 2021-05-17 16:42:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4284a54e23ad202c765dfc8532265865 SHA-1: b4ed0b7d49769c097dfed13a5bc38eac0fba93b0 SHA-256: 8ba73ab27c6b93247bf19da3b6d8945d838ceb2dccfcf841c5b7bbc1b896fd54
82 Risk Score

Malware Insights

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

The PDF document contains multiple links and a call-to-action phrase, directing users to websites offering game hacks and cheats. The ML classifier strongly indicates maliciousness, and the embedded URLs are consistent with a social engineering lure to download potentially unwanted or malicious software. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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-hack-apk-july-2021-game-hack PDF link annotation
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/xray-hack_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coins-master-hack_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/mcpe-free-download_GM479516143.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/google-moon-active_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/hacks-roblox_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_off000049d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D6 23848 bytes
SHA-256: 7792e431c7474440bb5e47cb0ed66c9da678873d3cc4320b41bd0361636bd0a1
font_01_sfnt_off00008044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8044 18856 bytes
SHA-256: e99766a1a0b67468f3491ceb7ac95e225ca21799f54ecffa1d342ccadf1fb563

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