Malicious PDF — malware analysis report

Static analysis result for SHA-256 269fb6373e0da50e…

MALICIOUS

PDF

33.2 KB Created: 2021-07-03 15:55:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 78f4c1b9ff23159a0dee86b2055da3ab SHA-1: b59808b5ec236ef980608c1a7f5fd07c28cc5e4d SHA-256: 269fb6373e0da50e1f6a4e3cadc735e3d730c7ce25efd86c976312d5ea5c74e8
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/406889139/coin-master-free-coins-twitter-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/get-free-robux-using-no-surveys_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-for-assasin-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/group-funds-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-accounts-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-download-apocalypse-rising_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-lua-7-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/artmoney-roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-account-giveaway-2021_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_off00002d86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D86 22348 bytes
SHA-256: bf63d601b788427fa9c6b0a90b0f7c52c81a58e96a0ad28902b716eb5f0e72dd
font_01_sfnt_off00005f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F43 18164 bytes
SHA-256: 09e900af93239ebf083e1853a07df87e0e3ca0331bfdd202e2e38c424b6e948b

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