Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c112d00d866b571…

MALICIOUS

PDF

43.8 KB Created: 2021-05-10 20:04:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 04e58c6b987f642972423c2b27ac4699 SHA-1: d697e64fb0ee1f32157addd4649188d85d8c118f SHA-256: 3c112d00d866b5714f0c037c6397c8604e69dca1a80dd488369bf9e311f4dfc0
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 0.9969

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/how-to-hack-a-roblox-account-2021-game-hack PDF link annotation
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/getrobux-info_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/free-robux-link_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kukar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-paying_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
stream_003_off00004a43.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A43 26368 bytes
SHA-256: 4bc20a4f66448928608f2494fd7ad86d803afafd188e91d97985efcad0ec8a74
font_01_sfnt_off000086a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A2 18992 bytes
SHA-256: aeef6a7714c6357f73dd4bac3524810632f54ab1d1528492d13c90d39421ba58

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