Malicious PDF — malware analysis report

Static analysis result for SHA-256 bafe08bfd66236fe…

MALICIOUS

PDF

34.7 KB Created: 2021-06-19 16:43:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f71527cf7aa0f442e33c10abf35a9703 SHA-1: 2683e3cbbd67bffde1688671a703c956c42df9a0 SHA-256: bafe08bfd66236fe95e070a9d5700c0783e41908bc079639fa30a7a3596ef03c
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/groups-that-give-free-robux-game-hack PDF link annotation
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/c-design-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/how-to-get-free-followers-on-tiktok-fast_GM835599320.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/robux-money_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/hack-client_GM479516143.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/easy-no-survey-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/roblox-font-free_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://elearning.min5bm.sch.id/__statics/gudangsoal/files/free-3d-online-games-like-roblox_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_off0000315b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315B 21888 bytes
SHA-256: ec293f42cb6b6d22bd7c2421c9f368f5f9f6c313c1dc7d1191bfcca61a8be1b2
font_01_sfnt_off00006176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6176 19396 bytes
SHA-256: b3f43397c1c794afc83030ab29ceeb782b2ea1d7ed85f2b3d833594a9f43e511

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