Malicious PDF — malware analysis report

Static analysis result for SHA-256 97569e0b3813e6e2…

MALICIOUS

PDF

49.1 KB Created: 2021-06-11 13:32:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: cdf28af13429c314bf1047dcd72ef2e8 SHA-1: c0cf1444dd1cd011d166637698f0114c988fd9b5 SHA-256: 97569e0b3813e6e267795b0096d670733e8f5d0ddc1961ceae30867ccf1072d3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and cheating, directing users to external URLs. The primary URL, https://netcdn.tw/app/431946152/caught-my-girlfriend-cheating-in-roblox-online-dating-game-hack, is associated with a game hack redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lead the user to a malicious download or phishing page, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/caught-my-girlfriend-cheating-in-roblox-online-dating-game-hack PDF link annotation
    • http://stmb-multismart.ac.id/perpustakaan/repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/hacks-for-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-hacked-kids_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-hacks-robux-download_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-be-a-hacker-on-roblox-ipad_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/hack-to-get-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/can-pokemon-go-free-account-2021_GM1094591345.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/photostar-hack-client-inject-error-roblox_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50FF 26572 bytes
SHA-256: 973fc3c8fd1037d19a09c04394d6bca65c38164c38bfbccfcc2fb495c51d3d58
font_01_sfnt_off00008c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C77 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9988 19548 bytes
SHA-256: 6c22b4f6eb5bdad1dd10cf900831ff1f66a4a79251020e005eb1a83f94af8738

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