Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c6cb5819d133464…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 22:39:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5eb24e98def9218f6e29c9d275a9e202 SHA-1: ac955893dce7a96cfda10a4c16eb269c58b3ae25 SHA-256: 4c6cb5819d133464e50664ffcc6afb44978c8cfb0825533b406ce2c5dce9e265
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/coin-master-free-coins-link-2021-game-hack PDF link annotation
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/free-robux-pins_GM431946152.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/get-robux-now_GM431946152.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/robux-place-rewards_GM431946152.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/add-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/gain-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manicp.sch.id/__statics/gudangsoal/files/coin-master-cards_GM406889139.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_off00004b83.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B83 25008 bytes
SHA-256: ed22c5b3a9cb9c8dc4be86bb04b047c47a9d122451f781c7a634f97fd20cef24
font_01_sfnt_off0000840f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x840F 18284 bytes
SHA-256: be459003f2db1a934c49859962f2962ce704e042ee0985c73311b64c11e09449

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