Malicious PDF — malware analysis report

Static analysis result for SHA-256 5057b0b623dc8bbb…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 06:34:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 685e4a3e7e7569efc91254643cefc92c SHA-1: a95d15534a5fb163809a1e08a8443f2bf5fd313a SHA-256: 5057b0b623dc8bbb386c9ee4b40be90aae9bc862b3d19d46cc4f5088e00cb267
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/free-robux-android-game-hack PDF link annotation
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-to-get-build-tools-on-roblox-cheating-2021_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/roblox-com-free-accounts_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/template-roblox-shirt-free-shipping_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-to-use-money-hack-in-roblox-any-game_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-robux-no-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-pants-roblox-girl_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/minecraft-client-download_GM479516143.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/roblox-pokemon-adventures-cheats_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-to-get-free-robux-legel-and-free_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/robux-only_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_off00002fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE7 22560 bytes
SHA-256: 241359ac1826b85915e75cdbcd81b33ffb706a21adbd11c291cc9f2307046639
font_01_sfnt_off000061fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FD 19012 bytes
SHA-256: 2e478fc7b9ce0e70b8625047eb87de3eba01de88a50ec98befc019c81419eab9

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