Malicious PDF — malware analysis report

Static analysis result for SHA-256 35458330b015f134…

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 07:33:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dc59685f4e43a2ba2ffd1643a105d077 SHA-1: 1af6d4621555988a6b4c88319eec648163ba5997 SHA-256: 35458330b015f13489f789def44f7bb4e4a289c9fea4481e457cc0e97563cfd7
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 0.9865

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/406889139/free-coin-master-spins-no-human-verification-game-hack PDF link annotation
    • http://pustakafpsi.uin-suska.ac.id/repository/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/roblox-points_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/roblox-army-robux_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_off00004fa4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FA4 24856 bytes
SHA-256: 537466337976f290ba1d5d0786785a63a2c50ced6b35c0832c33d5de21f8e482
font_01_sfnt_off0000887a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x887A 18420 bytes
SHA-256: 6292f7fd9c783a708a29fdad24b2019f18fef79b6cfcf8f7eb350847db107d60

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