Malicious PDF — malware analysis report

Static analysis result for SHA-256 c59feec6c514e98c…

MALICIOUS

PDF

48.2 KB Created: 2021-05-12 11:04:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 226fefaa693a3b405b523e83543b3970 SHA-1: 53ad251862623ce759130bed010afef3a7e26971 SHA-256: c59feec6c514e98cf2005ddf56266d6d724f9f3c3c3532fab66e470f7dd5d625
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 0.9013

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/apps-to-get-free-robux-game-hack PDF link annotation
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/robux-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/roblox-moderators_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1ae.sch.id/__statics/gudangsoal/files/coin-master-cards-free_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_off00004bb9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BB9 28988 bytes
SHA-256: 8880907cdd3344bd4709eb81d76d589708a9d672334e4c0bafde292ec5bfe35a
font_01_sfnt_off00008d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5D 3656 bytes
SHA-256: 63a179d8a9645bea05c6d53b1776faf4e4a7281930de6cf484e639846bec2e20
font_02_sfnt_off00009a16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A16 18292 bytes
SHA-256: b4e5860ebf2343f9b18b94d86a305cbc7e8ebd2f2a6bfe7ceeed88b67548d8bf

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