Malicious PDF — malware analysis report

Static analysis result for SHA-256 74284dd8aefd0d3b…

MALICIOUS

PDF

44.6 KB Created: 2021-06-04 00:19:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ec5e7b22ac667552e4749e216485ddb3 SHA-1: dde0aab8260a89107e2472f324d2589f7a53ec5d SHA-256: 74284dd8aefd0d3b8a92b2251309a2a54bd4ab434968a4effb5f1bbcf5b049ee
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/431946152/free-robux-generator-2021-game-hack PDF link annotation
    • http://library.darmaagung.ac.id//repository/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/dailyrobux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/kachifpro_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/coin-master-free-online-game_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/master-coin-hack_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/free-robux-com-roblox_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_off00004f84.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F84 25220 bytes
SHA-256: 78150dde6c8fb9ff3c3a64529a20ed7804c3bae76adabc237d68da10572c4e4c
font_01_sfnt_off00008a39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A39 18748 bytes
SHA-256: fca1806ffff7593a0a2d811b077fe14576afb362c0c2e8ffc695fbf8edc3964d

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