Malicious PDF — malware analysis report

Static analysis result for SHA-256 545ea0e258154f9f…

MALICIOUS

PDF

35.3 KB Created: 2021-07-02 04:47:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8730406e82f6791ce5e5994721ed7a82 SHA-1: 48451dd154ad67f7656773351927e329a4b48106 SHA-256: 545ea0e258154f9f3a8940fafb17b0b61c8119391a29e15afc86d7aad9b9c50d
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/robux-free-generator-no-human-verification-game-hack PDF link annotation
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/roblox-lua-script-cheat-engine_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/abstract-free-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-redeem-cards-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-legit-august-20_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/roblox-speed-hack-cheat-engine-jailbreak_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-kozak_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/roblox-speed-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/roblox-hack-khol-admin-perm-codes_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/hack-into-people-roblox-account-pastebin_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/roblox-texting-simulator-money-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/hack-roblox-red_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack-mobile_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/no-survey-anti-bots-allowed-robux-hacker_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/roblox-robux-hack-com_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-code-generator-2021-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/roblox-hack-client-android_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/freer-tiktok_GM835599320.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/how-to-get-free-money-in-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-obby-july-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1kotamagelang.sch.id/__statics/gudangsoal/files/free-roblox-membership-codes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3277 22352 bytes
SHA-256: eb7ba8394d8a6da4925b4b2e50ce10c5ee9b2ac9d2a4628c4351d7edd4f39fa2
font_01_sfnt_off0000640b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640B 19336 bytes
SHA-256: 6ffa200d8a17991eb39c872b62678252f8742029555be96f5ecfb08e4ce3a299

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