Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c533133c3a2b9c8…

MALICIOUS

PDF

34.0 KB Created: 2021-06-26 03:20:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c954b7b3ecd47b0b0b3228e294657aca SHA-1: 1b62a0be41a537d128f68595e9bfff90ada925ae SHA-256: 7c533133c3a2b9c84a58fa6b5d6709bc813b1430c4aed50d82abd8fa87ce57e0
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 0.9980

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 http://netcdn.co/app/431946152/fastbucks-me-roblox-free-robux-game-hack PDF link annotation
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/roblox-hack-scripts-android_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/hack-cbro-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/how-to-use-roblox-cheats-on-xbox-one_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-candy-van-roblox-script_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/quick-robux-hack_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-and-builders-club-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/how-to-hack-other-roblox-account_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/roblox-cheat-engine-scripts-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/roblox-bubble-gum-simulator-cheat-version_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/how-to-create-your-own-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-tiktok-views_GM835599320.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification-website_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/roblox-snyapse-free-dec_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
font_00_sfnt_off00002fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA4 21712 bytes
SHA-256: 2505b2fb43d3357df71218de847d7acfad2a097c4ae46c461eacb9a00e03cb92
font_01_sfnt_off00005f23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F23 19260 bytes
SHA-256: 734978560c10a2c779e492d679eaa190f46be931a66ae71e28de8a2c6503df87

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