Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c7df9dab21e5356…

MALICIOUS

PDF

42.9 KB Created: 2021-05-11 00:30:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f9bce67cbc1b60fdbe290586d7798cd3 SHA-1: f4c5ff3c9f423c217476956a4f0be5debc863c35 SHA-256: 0c7df9dab21e53565a775067d369cd6761a2f0c8de1a5f40e6ede88bd284dfe5
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/431946152/how-to-get-free-robux-2021-easy-game-hack PDF link annotation
    • http://stitqi.ac.id/website/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/earn-rbx_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/how-to-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-free-spins-links-2021_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_off00004a64.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A64 24596 bytes
SHA-256: 6737aa8eeaa9ac080a4df41b53c4e4e0eca22434c7cf6e05dfd7df070cb4c9be
font_01_sfnt_off000082a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A9 19092 bytes
SHA-256: cc4041fc50bd2ea9a1268967e32916156e3a634973a216864dd7f220ceb04504

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