Malicious PDF — malware analysis report

Static analysis result for SHA-256 c70c19b75c557984…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 05:40:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d3e8cb67d33ea6f36e665bc8d037846b SHA-1: e17409c1700a2374f1ca4802a4045084d796ab21 SHA-256: c70c19b75c557984bc3ed62ec1fde981de4cc85b7e466b5b437062d016889021
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure for a game hack, directing users to a suspicious URL. The presence of embedded URLs and the ML classifier flagging the PDF as malicious strongly suggest a phishing or malware distribution attempt. The document body, though partially corrupted, contains references to game hacks and download links, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/how-to-download-minecraft-for-free-ios-game-hack PDF link annotation
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/pokemon-go-free-shiny_GM1094591345.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/roblox-top_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/guess-that-song-game-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.otomasi.uinjambi.ac.id/repository/how-to-earn-robux-fast_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_004_off0000530b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x530B 25256 bytes
SHA-256: e206dffee7480a8a4e56a43bd040aca9c0edb9e3c13ac1120fbc6136d5efeede
font_01_sfnt_off00008c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2B 18292 bytes
SHA-256: 6bfa7f6d06191d232a4e1dc6d24987c59b1603f32861b15c5e4613e2ba4a1bec

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