Malicious PDF — malware analysis report

Static analysis result for SHA-256 526e6299b6c465b0…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 11:30:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 9e8418bd7a927435477282eb4a7d117a SHA-1: 966a7c80dbeca48d67980ad8d854b5b7b8d98082 SHA-256: 526e6299b6c465b09a59b0bab23a34ea97c91376ea39e0835ca545f53b364605
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/479516143/minecraft-java-account-free-game-hack PDF link annotation
    • http://www.stttekstil.ac.id/elib/repository/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-hack-scripts-pastebin-grap-knife_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/robux-money_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/apk-hack-online-roblox_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-dashing-simulator-cheat_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-shirt-roblox-marmelllo_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/hacked-roblox-servers_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-arsenal-free-vip-server_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/hack-account-roblox-edit-this-cookies-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/cheat-central-roblox_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/microsoft-free-robux_GM431946152.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_off0000330a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x330A 21856 bytes
SHA-256: 8d9bf5115595c5c8e77113fa5f42b010dd736d7f8230be4e481aaf4bfce9e631
font_01_sfnt_off00006331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6331 18420 bytes
SHA-256: 4a74c40a1b1e29c96944a4022887c367d8badab26ac77df303b82089cac1792a

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