Malicious PDF — malware analysis report

Static analysis result for SHA-256 78a84efa1c34a5be…

MALICIOUS

PDF

34.2 KB Created: 2021-07-01 06:20:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ad64ffd674dc11944227e062360d8f31 SHA-1: 3ca84b499e57dcfb879e9356d6cb3468607a691c SHA-256: 78a84efa1c34a5be7883ba7bc478871eade2b785edeafb577cef9925512ba4ff
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/vip-roblox-free-game-hack PDF link annotation
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/free-robux-glitch-xbox-one-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/roblox-hacker-2021-download-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/apocalypse-rising-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/mcpe_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/how-to-get-roblox-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/roblox-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/adopt-me-roblox-building-hacks_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_off00002fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FAE 21972 bytes
SHA-256: b06a961c6850588357de2ed171bb66b8a36015bd60b21e1daa56c18a8be35927
font_01_sfnt_off00006071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6071 19080 bytes
SHA-256: a82366a483da2db2412d6ea32f1b33595210d3c57043e3e0418815d227c15a98

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