Malicious PDF — malware analysis report

Static analysis result for SHA-256 5954031ff5343ca7…

MALICIOUS

PDF

34.7 KB Created: 2021-06-25 17:47:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 701a071dbba56285f914725a2ac50e40 SHA-1: 2604eeeb4dd6b7d6061ffd7e3f9397f4b52b5bbd SHA-256: 5954031ff5343ca74a8c5237eadd7eadc7bd23b5a48facb325a2aec008d5e64a
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/anyone-use-roblox-hacks-game-hack PDF link annotation
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/robux-giver_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/coin-master-ad_GM406889139.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/roblox-free-robux-2021-no-wait_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnegeri9cirebon.sch.id/__statics/gudangsoal/files/minecraft-clipart-free_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_off000030f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F6 22468 bytes
SHA-256: 6d6ca18f1b0e4131e6de37addcdadda0280fa2d4dbfb10f1b8a849713b3e1a6e
font_01_sfnt_off000062ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EA 18836 bytes
SHA-256: 92d235b0049e5da3c426ba615a8e5e71cce24ae7b66df579476a65960375a803

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