Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb3668139d8308a6…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 11:17:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8283fdfe9a1d879d87a8b95a7f3d3a99 SHA-1: 808e93fd9fee2ac94c57333793dd48250a1dfc93 SHA-256: bb3668139d8308a65fef0c654f442715b65841ad67a532c886d3d8c5a7917792
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/431946152/roblox-www-com-game-hack PDF link annotation
    • https://ciptawiratirta.com/assets/CKImages/files/cash-for-apps-free-robux_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/roblox-money-hack-rocitizens_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/como-instalar-hack-para-robux_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/how-to-hack-roblox-2021-games_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/how-to-get-free-robux-on-phone-android_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-roblox-accounts-with-obc-2021_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/roblox-free-robux-plugin_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/minecraft-free_GM479516143.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-robux-robuxking_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF3 22788 bytes
SHA-256: 928ef635df8cfb81741955979508c2c8771f2adf4cfe2cbc03399244f0998216
font_01_sfnt_off000061e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E8 19108 bytes
SHA-256: ceed28034d8c161028cd36873b2602c2ebba079ae57d119b604a35ba28887711

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