Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cb167d369e465a3…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 05:44:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d27ced1f6a41baabba35d4587d8de3bf SHA-1: edea169ae542fec046cc13cc23e461e8f5a2a0fa SHA-256: 4cb167d369e465a3e336d22570b731774122f2f1dfef7fa6db9b68e24660f860
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.tw/app/835599320/near-tiktok-free-account-game-hack PDF link annotation
    • https://perpustakaan.stami.ac.id//repository/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-games-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/roblox-points_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/code-cheat-card-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-ad_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/isle-hack-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/descargar-un-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-hacks-free-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_off00003181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3181 21832 bytes
SHA-256: bfa5e9bcda2c7339fcc81ec74881eba1d41ea454a380aaeee92bf908874a0e6f
font_01_sfnt_off00006192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6192 18112 bytes
SHA-256: 9e03cf9808c641dfcb6668179cc8d9ec7ed783549034ad0097edb083e8ffacb3

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