Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea05dfb234c8311…

MALICIOUS

PDF

46.9 KB Created: 2021-05-13 20:04:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2c9425e5beb8375fab9d1ccba61cf8f3 SHA-1: 09ef5006f95726abe2245d1adb20e9af313da8a9 SHA-256: 6ea05dfb234c83110dbef32783b5b0a99e0e7f1fde4d658eef048bab986cd390
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 0.8948

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.xyz/app/431946152/free-script-executor-roblox-game-hack PDF link annotation
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/robux-place-rewards_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-pc_GM406889139.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ace.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ACE 28148 bytes
SHA-256: b76620f395919a91c17b0a3047650293d1305baf235bc70201a1a30af74a79fd
font_01_sfnt_off000089f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F5 2984 bytes
SHA-256: 889cfc2fd0afa9ea114d6666204c6ce0548d0aae2cba345827d317498c4c06bc
font_02_sfnt_off00009421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9421 18488 bytes
SHA-256: c1d8906df7cfed201442eecb2c05ff4a638972dd76746327367067a9273c3e32

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