Malicious PDF — malware analysis report

Static analysis result for SHA-256 25fcc8fafc463416…

MALICIOUS

PDF

42.7 KB Created: 2021-05-10 22:01:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c0488b25f67bb9546f16a4d6f4804a60 SHA-1: 3687cb0ea6d32391f3581e39a2b478d8e2283a14 SHA-256: 25fcc8fafc4634163477c553bb99c8ee238943ebd626230d9eef44870278e079
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 0.9971

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/how-to-get-free-robux-easy-on-phone-game-hack PDF link annotation
    • https://library.sman1berau.sch.id/repository/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spin-app-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-without-human-verification-real_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_off00004b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B5F 24264 bytes
SHA-256: c36fd3229db1c124e15930b051f9943cca34a4c3adb368a0ed2308e64feaec0e
font_01_sfnt_off0000823e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823E 19008 bytes
SHA-256: e6e3347b6ae704c87521381cf50d1046861d1e5efe3155f159bfcc6a29e599dd

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