Malicious PDF — malware analysis report

Static analysis result for SHA-256 6446ccb17e3f369c…

MALICIOUS

PDF

36.5 KB Created: 2021-07-03 17:07:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b0b8d78666bfe016a7d72f87817b350e SHA-1: 8a159b8eb93c11e1f1f240e723280e56cae87496 SHA-256: 6446ccb17e3f369cea9f693c833bea0f8a77f301037bb16a582267d0f5cae9ae
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-and-spins-coin-master-game-hack PDF link annotation
    • http://perpus.iainkediri.ac.id/pasca/repository/free-roblox-exploit-no-key_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/contact-roblox-account-hacked_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/robux-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-free-stuff-hack_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-to-get-free-robux-no-joke-2021_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-to-get-free-robux-on-chromebook-2021_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/hack-roblox-cheat-engine-64-2021_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-fire-tik-tok-2021_GM835599320.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/cheat-engine-64-roblox-download_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/money-hack-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/alot-free-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
font_00_sfnt_off00003795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3795 23208 bytes
SHA-256: a599aea7da7e8508cc1f83f342e2f06962359befd8a874aec1bb9d0fc1a7781a
font_01_sfnt_off00006bf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF1 18348 bytes
SHA-256: c90f632020bcb1e728f62a43997badda2860e0d329262e99dedc1f8a12c39115

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