Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed645a0a58ef8fac…

MALICIOUS

PDF

33.9 KB Created: 2021-06-19 18:05:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8755fa526fef74ef5ad4b83f37e0bef4 SHA-1: 22d07d93181234d8fd289764c78cfe035bd01d28 SHA-256: ed645a0a58ef8facceab4c310f1e965da56c156744a60b9988527f5aac6958d8
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.co/app/431946152/get-free-robux-generator-game-hack PDF link annotation
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/whats-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/claimrobux-net_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/roblox-free-pants_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/roblox-build-a-boat-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/lazyblocks-com-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_off00002ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFA 21868 bytes
SHA-256: 0fe0b027e205c35ed42fb606a2ee3afe39bb998f550009235bd21daf9613626b
font_01_sfnt_off00006002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6002 18820 bytes
SHA-256: 3cf5f9b00a39f0cfcbee830171857ad484f6534b8809920e240be9eaf31d3faa

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