Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c3a90696cdd4dd…

MALICIOUS

PDF

36.1 KB Created: 2021-07-07 16:18:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 233da8de10eca9c2a07865485a1c30e7 SHA-1: dd2d936abd0ef2701e0775d1b832f2b9abd4c855 SHA-256: 92c3a90696cdd4ddda60fd834b038890350c7d9ada275561aecd53780352ddbe
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/coin-master-free-spins-link-without-human-verification-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/roblox-loki-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-stop-a-hack-script_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/google-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-no-verification-no-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/hack-for-wieght-lifting-simulator-3-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-redwood-prison-free-swat_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-combo_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-codes-2021-working_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-legel-and-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-codes-in-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/getting-robux-w-cheat-engin_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-re_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-script-hub-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-become-unkillable-in-wild-savanna-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-free-download_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/rbxcity-free-robux-instant-pay_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-bird-simulator-hack-script_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000034c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34C5 22852 bytes
SHA-256: a1879813dfa564d4133439ce3954f2f82d69033f066199acfdf334b05a826b1d
font_01_sfnt_off000067be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67BE 19244 bytes
SHA-256: 0c63abbe58859d209b3df0ea6da396dfaf3a882fadb5113124574a7e4c6c3b56

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