Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3ae0fe7fab551e9…

MALICIOUS

PDF

35.9 KB Created: 2021-07-06 06:34:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 88d83bed1b2d1200c4feb8c12464667e SHA-1: fca7a2b968c0cd4870bd413e4b8919e73979df59 SHA-256: e3ae0fe7fab551e9f4d09e8c91ebabfd7136e9d4e576e92f37a72e9e66bf302a
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/479516143/play-minecraft-pocket-edition-for-free-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/are-there-and-free-safe-roblox-exploits-v3rmillion_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-education-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/nonsencediamond-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-without-emails-passwords-and-ccontact-number_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-free-without-sign-in-also-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-running-gamepass-parkour-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-items_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/cheat-roblox-jailbreak-installer_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/clothes-for-free-online-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_off000035c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35C1 22656 bytes
SHA-256: a33302297e84d3fdb29d0f23e956ebe6788a81d2836bb25ed13dd183e142d0dc
font_01_sfnt_off00006881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6881 18752 bytes
SHA-256: 1c750ae825fc9a886ea70e83678fe12c2f590e2b55fff129ba454ba43f005414

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