Malicious PDF — malware analysis report

Static analysis result for SHA-256 904161752dffb74c…

MALICIOUS

PDF

36.4 KB Created: 2021-06-18 19:04:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9225951c853348a959da5526cf683ff6 SHA-1: 17345300bfdcf5db6daa2ba87b60c822c543233f SHA-256: 904161752dffb74ca143874a0944ed48f3dfa6ec54a93a7275e8ca4261b6d779
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/how-to-use-cheat-engine-on-roblox-august-2021-game-hack PDF link annotation
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/robux-free-c_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/tiktok-hearts-free-2021_GM835599320.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/dailyrobux_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/free-promo-code-for-2-million-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://elearning.man01kuningan.sch.id/__statics/gudangsoal/files/roblox-hack-me-robux_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_off0000358f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x358F 22492 bytes
SHA-256: eeae8960bb7fc837604d9ff7c519f44be44cc34fd9d4c75b88c68f77affd4e01
font_01_sfnt_off000067c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C1 19580 bytes
SHA-256: 22d7782d7c4b60faf2abd852a3b4a99e9839009be3ec241726f772c1ac75a63a

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