Malicious PDF — malware analysis report

Static analysis result for SHA-256 f07b2cbb7b91aab4…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 09:01:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 67dd8fe422bca7588fb011922e178ea9 SHA-1: dced8b1f3217dcebec80ad2a754a02b77cf52b5e SHA-256: f07b2cbb7b91aab4d1baa52b7114fce9f5bc0f0d9d1a1a79fa6b3483327789da
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.tw/app/431946152/get-me-robux-for-free-game-hack PDF link annotation
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/how-to-get-1-million-robux-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/free-robux-adder-tool_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/roblox-dll-hack-april-2021_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/free-robux-downlod_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/imaflynmidget-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • http://minurispenjaringan.sch.id/__statics/gudangsoal/files/mc-update_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
stream_002_off00002f99.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F99 22788 bytes
SHA-256: 20d7d55e6c666773a710ccea817bf0483f455d8fb55337c73a016dc9795b4fca
font_01_sfnt_off000062ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62ED 19016 bytes
SHA-256: feaab394b075859e694c399921b9b5bf0523619dd427b317c2360992586738dc

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