Malicious PDF — malware analysis report

Static analysis result for SHA-256 31d601ca045dd999…

MALICIOUS

PDF

35.3 KB Created: 2021-06-26 11:30:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 315eb1d8dd741bbc555020d0d1d08dc9 SHA-1: ad17e58553a7c4a4c4a6dca27f902a8ab7cead84 SHA-256: 31d601ca045dd9992595cd75867cdc7d6649ed0dac7a0c97d144f9d9a308460a
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/free-remy-roblox-id-game-hack PDF link annotation
    • https://man2samarinda.com/__statics/gudangsoal/files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/what-is-a-robux_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/draw-it-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/how-to-get-everything-free-on-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/feb-23-2021-free-coin-master-spins_GM406889139.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_off00003333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3333 22180 bytes
SHA-256: 05df4ba83b8b14023de7699fcebcac0523c14f3371c87640420fbe5f08927df9
font_01_sfnt_off00006461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6461 19264 bytes
SHA-256: 466896b3b36ca15a76005a36d5436331ba9638e37673970f122f7f9891297a3d

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