Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4578be1c077888c…

MALICIOUS

PDF

48.3 KB Created: 2021-06-03 09:05:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b80af60e94effa8c5603fbd61ba154d4 SHA-1: b4170f449cc7701c211e1ab24dc8f9fa16e7ea75 SHA-256: a4578be1c077888c4356c0b9593b060f45843ad41761aace6f542921f73c60d8
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 0.9796

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/406889139/free-coin-master-hacks-game-hack PDF link annotation
    • http://www.digilib.uim.ac.id/repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-roblox-followers-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/roblox40com-robux_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-spins-coin-master-blogspot_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005186.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5186 26904 bytes
SHA-256: 6759a707afe488736e36c2f02e1f08f636c9aee5da19560c9627e4c07458142f
font_01_sfnt_off00008ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE2 3560 bytes
SHA-256: 9d03f7c6c62ba3e7fdc0441e9d982a863b2b60b781165d6920512f68ecc4a440
font_02_sfnt_off00009b69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B69 17880 bytes
SHA-256: e9d83edb2e1b044691ef11a4057c4d6cc11a4a50971021398c2c06fbe5537458

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