Malicious PDF — malware analysis report

Static analysis result for SHA-256 cde5f493cc031cec…

MALICIOUS

PDF

41.5 KB Created: 2021-05-17 14:08:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5070c7d3ecb7ac6592e70cf64135f7b0 SHA-1: 9a21bcf28234dcccbea416c81c2d8299d7185512 SHA-256: cde5f493cc031cec546b9cc68402252df6c5036ce27927d020407d907f32b8eb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/hack-the-coin-master-game-hack PDF link annotation
    • http://ohsawamacrobiotics.com/images/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-hack-app-android-download_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-coins-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/how-to-hack-a-roblox-account-easy_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_off00004932.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4932 24612 bytes
SHA-256: b7c1ddda1d56a55daf1d118297d5e86686f6e8d2aeb6a152b4a12d03b3b020da
font_01_sfnt_off00008141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8141 17880 bytes
SHA-256: 8eac0e5399a7748d40951fd2fafb0ad0152a26564755aa210bda9cd00e94f31b

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