Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc5e159130f1651…

MALICIOUS

PDF

52.5 KB Created: 2021-06-03 23:15:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 55efe8b921ab386ca8c1cdea59533533 SHA-1: ac62396372b956aedc1dd6a07c370c03dcd495d8 SHA-256: 0bc5e159130f1651400af271826def0ce7b53bf92a70ccd86c0f580388476b7a
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 0.9657

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.online/app/431946152/rbx-gg-free-robux-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-reddit_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roebucks-com_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5076 28704 bytes
SHA-256: e28fc842f85cec39976ed4db1c854f48081419b72e68c4138c28840d9bf42980
font_01_sfnt_off000093a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93A7 2828 bytes
SHA-256: a4e15770ab3b920ccbab17816ac2be280610f3f789d7654b00721cdcc5d65b79
font_02_sfnt_off00009d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D57 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000aa69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA69 18304 bytes
SHA-256: d1ad45f5b083d36c6ec4c124be04f92537ae8dd31535970cb7662339535ad89d

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