Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b32e4e61d2309d1…

MALICIOUS

PDF

45.0 KB Created: 2021-05-17 07:08:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f32737370f097f69dddcd73dc9779f62 SHA-1: 9da02836ea792f3d418783a6855654b981b7b30d SHA-256: 3b32e4e61d2309d1e8f83fee4168c147cf37d3b2579c9892ac53206e137b49fa
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 https://netcdn.xyz/app/431946152/get-free-robux-generator-game-hack PDF link annotation
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/robux-sign_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/coin-master-com_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/free-robux-real-working_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
stream_003_off00004eec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EEC 27664 bytes
SHA-256: e48a1624adaa4792f70d170ecd3150bb429fe58269192bf9ea032256f6b268ed
font_01_sfnt_off00008d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D85 18344 bytes
SHA-256: 3242c4573a8204327cdf084b118e3b23cfd789fa9551ab2d205e53ac9add3c4b

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