Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3086c5d052461c2…

MALICIOUS

PDF

43.1 KB Created: 2021-05-18 00:43:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fdd3fd4577ca88d6390fed81f89e254e SHA-1: 0796a7766f1a903635de969c9a0692f68554698c SHA-256: e3086c5d052461c2d0eb6955c9158ca6d9c861cfaaaaad46bd992c2afffa29aa
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 0.9971

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.xyz/app/406889139/get-free-cards-coin-master-game-hack PDF link annotation
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/i-want-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.man3kabupatenbanjar.sch.id/__statics/gudangsoal/files/robux-hacks-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
stream_003_off00004bdd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BDD 26024 bytes
SHA-256: 4395432ea1077024c4339435ee0b27af2d23695448350de2fd6724662442af02
font_01_sfnt_off00008781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8781 17884 bytes
SHA-256: 2df54ae97b7ad974d0fd113118d78f36970e506fc507bb8e05cd99f47a54c96c

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