Malicious PDF — malware analysis report

Static analysis result for SHA-256 323d40ebcccc42b6…

MALICIOUS

PDF

36.2 KB Created: 2021-06-28 13:18:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 01b6d1f43e1797ea2ed2ec81d0ec7cbb SHA-1: 10397ccf25b033afe0189c37eb1136e36e7b5efe SHA-256: 323d40ebcccc42b63ed55174b97a1db8b0e41f7d642167b37eef57a7715c8997
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/free-robux-access-code-game-hack PDF link annotation
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/vibe-train-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-insect-no-waiting_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/hacker-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/free-robux-pagina-oficial_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/fbchampion-com_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/minecraft-download-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
font_00_sfnt_off0000362c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x362C 22900 bytes
SHA-256: ad9d733cf8b88f57d856cd9db36ef0f22b541665a8f177f987628cf7eb62bfdd
font_01_sfnt_off0000693b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x693B 18888 bytes
SHA-256: 33229621dcbd9d46909c17709fa0036e06b72f6f0d78e7c036c80033a25136b6

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