Malicious PDF — malware analysis report

Static analysis result for SHA-256 bce2b0d34b5a3fe1…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 15:37:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c7366370c6ac879976a490124c945174 SHA-1: eed4db4b30b50963ed73a4dc713edc55143de23e SHA-256: bce2b0d34b5a3fe17d75e23f896fe411c0ff341883fe555778728b53d9b1906d
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/roblox-promo-codes-2021-robux-game-hack PDF link annotation
    • http://smkn1salatiga.sch.id/library/repository/1x1x1x1x1-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-admin-panel-free-robux_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-star-codes-for-roblox_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/robux-hack-ohne-handy_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-hacount-hack_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-robux-hack-100-works_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/tips-free-roblox-robux-generator-2021-no_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-free-clothes-hack-2021_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/commands-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/roblox-hack-xbox-one_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/furky-safe-free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/infinitejump-hack-roblox_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/lol-roblox-cant-patch-the-free-robux_GM431946152.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://smkn1salatiga.sch.id/library/repository/free-hairstyles-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000031b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B7 21468 bytes
SHA-256: f7aecbced63e91d6ea9971eb127e0bd8f1b226192642e68a191a2e0197b6fde3
font_01_sfnt_off0000609b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609B 19616 bytes
SHA-256: aedf02d7f0b7ca1977671ed02758df5f4e20327b562b1ca1699aff0c252b4351

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