Malicious PDF — malware analysis report

Static analysis result for SHA-256 70e9b991dd8140c4…

MALICIOUS

PDF

45.8 KB Created: 2021-06-03 07:41:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 33fe0e4ecdfc39a9be3082a32824e04f SHA-1: 7586c6f98d172c5aa595b9e4c0735e236c98b84a SHA-256: 70e9b991dd8140c40b7f07bd75b415322c4ea8ab5b3205ca1b53f776d2fdd9c0
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 0.9797

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-33-hack-version-download-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-1021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-client-download_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004df4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DF4 24108 bytes
SHA-256: 9c7a52f5b0d1db03749e984ea28db8a8b396dd9edd41eedb43026805f8304ce9
font_01_sfnt_off00008525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8525 2824 bytes
SHA-256: a0d6c1ef1f7405ab05245801e4abbc2877925f97898db53811df9ab010e978fa
font_02_sfnt_off00008ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC2 18604 bytes
SHA-256: 576890e4c763f9db6306a154ec89977ee7624ba5680b6859e355f4a2c18aa410

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