Malicious PDF — malware analysis report

Static analysis result for SHA-256 c52b597c4b48019a…

MALICIOUS

PDF

35.8 KB Created: 2021-07-04 19:21:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e364f5f675ad978fed9a04cdd07fb662 SHA-1: fefab9db9ef21553487ffa5edda8f3e4e3a76ea7 SHA-256: c52b597c4b48019a9a46a08bef85c72ca9a9fb84e104fda98d724a055d4da5f7
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 0.9980

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 http://netcdn.tw/app/431946152/free-robux-that-actually-works-2021-game-hack PDF link annotation
    • http://otomasi.stikesmuhgombong.ac.id//repository/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/spins-coin-master_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/piano-keyboard-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/roblox-comcom_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/roblox-name-charnge-hack_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/roblox-suit-free_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-to-get-100-robux-on-roblox-free-2021_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/roblox-free-robux-t-shirt_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/roblox-royal-high-school-hack_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-to-get-free-robux-using-inspect-element-2021_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/pokemon-go-free-joystick-ios_GM1094591345.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/roblox-magic-training-hack_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/roblox-free-gold-chain_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-free-daily-spins_GM406889139.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_002_off000032fa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32FA 22220 bytes
SHA-256: f89614cc3a931122d2f7d6407f783502d63afb80d1ecbb18313b3cb993626a76
font_01_sfnt_off00006426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6426 20008 bytes
SHA-256: 8708610d65edee27054ce301a9bd75c7c559fd6231599c341fc0984ebcbede77

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