Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d3be4a8b7e4dd1f…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 18:50:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dd2e1539fb09975faa5f6b3ddd51269e SHA-1: 98473cdf72a5a98d2b9add580f372735afa82509 SHA-256: 7d3be4a8b7e4dd1f0e64cbdc7dfbbbb62fe7b51b01e6f282c95077859b5b6b7a
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-hack-download-2021-game-hack PDF link annotation
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/roblox-followers-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/earn-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/jailbreak-roblox-hack-download-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/show-me-how-to-get-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_off0000322a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322A 22336 bytes
SHA-256: b5aa1a3e2f00f266045edd88e5386ed09385b654718cb1e325dc1b5c2a6f666a
font_01_sfnt_off000063a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A3 18988 bytes
SHA-256: 24c61ec5dda380d335f70cf248a1dbd8858f35ecf964e4cb835eae0821bc023c

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