Malicious PDF — malware analysis report

Static analysis result for SHA-256 318669bea8e4a966…

MALICIOUS

PDF

41.9 KB Created: 2021-05-19 00:03:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: efb445c795db0f1e3852707924089f18 SHA-1: fc7a7470683f79afbe33eaff2ead1bf53b3acb17 SHA-256: 318669bea8e4a96603a6912b335732531590ebaa4800cb1caaecc752e90d73cc
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/1094591345/how-often-pokemon-go-free-download-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/download-hack-coin-master-apk_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_003_off0000482d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x482D 24492 bytes
SHA-256: b038b198f6e31f3e069f67bb3cf7158aa024eae30220bc48875291a2401439b5
font_01_sfnt_off0000803d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803D 18756 bytes
SHA-256: c4e6be98d1dff5774badba90f003ed5658e623f0f0ba42bbe92020b8b0fc6fb3

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