Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a2e10b49ae1634a…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 09:01:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 374335f042d5bdd3a94edc5be96eb5d4 SHA-1: 8387c7e14053d7ea8e605cdff2cf1367e1389556 SHA-256: 8a2e10b49ae1634a60e2ebb7020c8a3665a855ee5b499254ce6c42419bafb71f
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 0.9865

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.online/app/406889139/coin-master-free-spins-link-no-verification-game-hack PDF link annotation
    • http://library.stieyapan.ac.id//repository/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/pokemon-go-free-online-play_GM1094591345.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-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
stream_004_off00005055.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5055 26724 bytes
SHA-256: 06b3851cc7f7bcdaffe06f174c79af32c2b09a0b9ac7d04284814036620e6284
font_01_sfnt_off00008dd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD5 18188 bytes
SHA-256: 9c028cabc1bb5e28941c56192a15062bca5e24978f6557b783656291ce4b4993

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