Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9689d04547c46e1…

MALICIOUS

PDF

47.6 KB Created: 2021-06-11 12:08:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: fc207b3e815875bf6f7dec91ffe5db7b SHA-1: 74eb488fe54373a2cc9c1802c5998f234da230b8 SHA-256: d9689d04547c46e1f2a53ed7f69bc7bde3ea161132e380a0d16f3fadf6d6b962
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9769

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/destroy-roblox-hack-game-hack PDF link annotation
    • http://digilib.akbidarrahma.ac.id/repository/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-admin-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/how-to-egt-free-robux-robuxian-youtbe_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/earn-robux-online_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-download-the-game-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/pubg-uc-low-price_GM1330123889.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-adopt-me-free-money_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/easy-coin-master-hack-without-verification_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_off00004faf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FAF 24996 bytes
SHA-256: 48c630fde998afbd6bbb1e24256d88b387386771b9d1086dc25ca5864ceec138
font_01_sfnt_off00008973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8973 3608 bytes
SHA-256: 608f0dd4f6bfb6adbccec84228618ee8e4c9e09226d7330efb5300e499d1567f
font_02_sfnt_off000095fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95FA 18632 bytes
SHA-256: 44e97723a2fab036858698a9512574f6f08e8d9cb8f04e3796edd922415d8ba0

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