Malicious PDF — malware analysis report

Static analysis result for SHA-256 05f9fd8b64fb49f8…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 22:12:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 95c2039216e0f1d9ccc7915992eda9ba SHA-1: abe05585f11c1a94ae835f5a90a12b1eb6f18b1a SHA-256: 05f9fd8b64fb49f8d4d75fe4d1abf51f0c2636ff1792a1feb4f2fa4f7f87b740
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/431946152/rbx-land-free-robux-game-hack PDF link annotation
    • http://opac.salatigakota.go.id/slims7/repository/roblox-how-to-get-free-obc-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/half-hacker-half-guest-roblox-300x300_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-roblox-adopt-me-money_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-play-roblox-for-free-on-xbox-one_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-wall-hack-in-roblox-murder-mystery-2_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-package-com-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/google-free-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/youtube-how-to-get-free-robux4-on-roblox-for-ios_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-get-free-bc-on-roblox-2021-october_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_off000031e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E2 22516 bytes
SHA-256: 9173920a8852706d196a8932fbd86707403dbb6afc1cfc855f74b3ab7aa64b09
font_01_sfnt_off0000643b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643B 18888 bytes
SHA-256: 4817daf99d7be6acb7e085ade210037e4f4d39e99fb734b610a789fe26adf34b

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