Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d944f0a66d2806…

MALICIOUS

PDF

33.5 KB Created: 2021-07-01 17:13:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a65a7344b8c7352b2c2e19991a4dc13b SHA-1: cb7463ce47205deb6bbef9270c07e26eec102912 SHA-256: 15d944f0a66d2806eb0f39908838617ffa0cc02dac6cfc2ec83487c73d82c2a5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'Free Robux Online Generator' to entice users. It contains an embedded URI that redirects to a malicious URL, likely to download a second-stage payload or phish for credentials. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/free-robux-online-generator-game-hack PDF link annotation
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/roblox-hack-script-animations_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/roblox-gift-card-free-no-human-very_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/dayz-roblox-item-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/infinite-jump-roblox-hack-free-download_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/free-real-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/hack-tool-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/cheat-engine-roblox-rocitizens_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/free-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/how-to-hack-a-person-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/cheat-engine-64-download-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/can-a-roblox-exploiter-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/free-robux-2021-unlimited-calls-for-kids_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/how-to-loop-jump-on-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/free-roblox-followers-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/cheats-for-dinosaur-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min2kediri.sch.id/__statics/gudangsoal/files/make-roblox-free-robux_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
font_00_sfnt_off00002b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B99 22696 bytes
SHA-256: 662e58d5c21e30e5752c591a107586c888946ebd017cf93536c2a9f95aaaaa59
font_01_sfnt_off00005e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E50 19012 bytes
SHA-256: 35e58c2a419ff3d78c026d644cd9bffbfe04eef1b837341fa9ee86d7594494e5

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