Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea21aa7aae16cfec…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 17:13:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c3597b66e9f978efe555cdf5bf4792f8 SHA-1: bd7f5a5bbb75aeb22394d1a108c3186d24f64b3c SHA-256: ea21aa7aae16cfecd31965b3a814a55ea493e76f390d55e0da50e2666207288c
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 0.9865

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.online/app/406889139/coin-master-unlimited-free-spins-link-2021-game-hack PDF link annotation
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-3-easy-steps_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/how-to-get-free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/free-robux-app_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/builder-assistant-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/minecraft-free-download_GM479516143.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_004_off0000522c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x522C 24712 bytes
SHA-256: 4a49346678c2e7049bd71a3c7a2b224ef020a496b761609d1b4e1bcd0d3697d2
font_01_sfnt_off00008a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8D 19152 bytes
SHA-256: 5881489854435c4df30fbeeaf3dcf370e1cc518be434610ef19958204180da95

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