Malicious PDF — malware analysis report

Static analysis result for SHA-256 672d1cd37d9cd5af…

MALICIOUS

PDF

36.0 KB Created: 2021-07-05 16:04:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4bea24f8cafcb5305d77b9e1341c59cb SHA-1: dd296f006b32716ea2a3bfe89486c8fcb60ea378 SHA-256: 672d1cd37d9cd5af01dc34d9904a3937ea008d9c2e2136c53a68883d4e3eba53
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/406889139/free-coins-for-coin-master-game-hack PDF link annotation
    • http://pustakafpsi.uin-suska.ac.id//repository/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/infinite-jump-roblox-cheat-download_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/bux-gg-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/counter-blox-roblox-offensive-skins-hack_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-to-be-a-hacker-in-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/roblox-real-hack-works-28-august_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-dyna-roblox-dinosaur-simulator-coddes_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/coin-master-get-free-spins_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/code-for-free-red-jacket-roblox_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/roblox-ce-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/get-robux-today_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/descargar-roblox-hackeado-android-1_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/coin-master-daily-gift-free-spins-and-coins-link-today_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
font_00_sfnt_off000038e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38E5 22528 bytes
SHA-256: dc00a2b2c620d220b15c1515ed2d8de98bff0e8f300a4ec05eed6817b384e2b1
font_01_sfnt_off00006b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B19 17996 bytes
SHA-256: db592684bbdaaeb7647633841870edbd5981f70e843d3403859f62ceb8e0c83d

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