Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde956a7d6c625f0…

MALICIOUS

PDF

35.3 KB Created: 2021-06-28 02:26:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1a82a0fffa29edc067cdd228f288af47 SHA-1: 2b8af0afc661643ff77e54ede7fe0020143d53a6 SHA-256: fde956a7d6c625f0efc9efdf1e74ae9f0dabbe1490b47f814c8b4910aa38c122
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/hacks-for-roblox-rubux-game-hack PDF link annotation
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/roblox-royale-high-cheats-for-diamonds_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/free-hair-roblox-boys_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/claimrobux-net_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn3lebak.sch.id/__statics/gudangsoal/files/kuso-icu-roblox-hack_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_off0000328a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x328A 22820 bytes
SHA-256: 279deb9436e4ce965f92add4fa7fc6866ccbc133ccf81a79fd9ece1a1513bd2e
font_01_sfnt_off00006572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6572 18960 bytes
SHA-256: 52412e46dfe3d3fcb01d4686d2bbf1bc56a73369833984c41f6b1d7c5d8995d2

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