Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e3ef5866d399d0d…

MALICIOUS

PDF

34.7 KB Created: 2021-07-01 14:13:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a0e2431440a8f1ecab2ef1a21d6707e9 SHA-1: 2471485757dd52275e439ae9502484745e9f5328 SHA-256: 1e3ef5866d399d0d7086d3331a42ae3a6aed49c7fcd8bf063bf9315ffd3ac5e8
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.co/app/431946152/how-to-get-free-coins-on-assassin-roblox-2021-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robux-match_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/can-my-childs-friend-hack-roblox-game_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-hack-robux-sin-verificacion_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/bugmenot-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/https-web-roblox-com-games-2021202199-freerreaddesc_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-rum_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-cards-by-doing_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/atticus129-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/cheat-roblox-menu_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-giveaway-youtube_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/best-free-online-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-hack-roblox-to-get-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_off0000303c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x303C 22156 bytes
SHA-256: e2a2b9ef4f0ab0e786c9feafd08dd4cb01690806dec7c9641bc5a05c0aa5b0f0
font_01_sfnt_off00006119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6119 19440 bytes
SHA-256: 424dc5425f2d01132267565af36ad7bad430d4c06c1acbc20a580ecbdc5c9e5e

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