Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9fa38ada6823ff1…

MALICIOUS

PDF

33.9 KB Created: 2021-06-19 18:00:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 54bcb9767d848dc095a08b1b54c49203 SHA-1: 6ee3594a4d2dabe285c954b2f73ea092e08f24db SHA-256: f9fa38ada6823ff14f8d26f055babe85a77d3827b9b6f2158cdd3aefddb1adca
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/denis-daily-roblox-shirt-free-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/cm-daily-spins_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/the-cheat-mac-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-level-4_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/gain-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/urbx-club-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-roblox-ledgendary-swords-rpg_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-level-7-script-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-download-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-weird_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-com-no-verification_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_off00002dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DEC 21904 bytes
SHA-256: b8a6ed59cbe198b8c81d1ddc58fd4c6ec98b44a0f5e380ce22d2c93e1dd882a1
font_01_sfnt_off00005e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E41 19388 bytes
SHA-256: fa203833411e7dbe7f1a3a087df1cb35bb06b643533791866906e2ded611074a

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