Malicious PDF — malware analysis report

Static analysis result for SHA-256 73e34eb3ccc192bc…

MALICIOUS

PDF

32.5 KB Created: 2021-07-06 07:39:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: eacbffcac50499bad0ec358e9295ceb0 SHA-1: 4df7414e34373bf9bcbc51998bd7639d81fa27a5 SHA-256: 73e34eb3ccc192bc64cb04e0d691493f85117b77788ca1851fcfcf64ed901880
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 0.9824

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/431946152/roblox-website-robux-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/how-change-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/roblox-re_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hack-roblox-deathrun_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-2021-android_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/get-black-eggs-free-egg-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-cheats-for-money-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-robux-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-mm2-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-roblox-accounts-2021-windows-10_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-blood-and-iron-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-plz_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/legit-coin-master-hack-october-2021_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_off000028ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28EE 22060 bytes
SHA-256: d9f7dd10632192956216527e5a24624ede315edadcf776641fdef0d0f00d97ec
font_01_sfnt_off00005a10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A10 19048 bytes
SHA-256: 97836acc5fbafad7f52075bd973fc1ddd6b122b993e7f590483986b39f5f79de

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