Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eecd0eb7087a791…

MALICIOUS

PDF

35.1 KB Created: 2021-07-03 16:19:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 8a7673316aaf5bb0c2bc6706a362ed6b SHA-1: 51d1f23dd02201e8689da8250a2c909265e8f379 SHA-256: 8eecd0eb7087a79160369696816ad7ac96664b79a3085371502750dbf89e2eec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to a known malicious infrastructure. The document body and heuristics indicate a lure for free game hacks or currency, designed to trick users into clicking the malicious links. The primary malicious URL identified is http://netcdn.tw/app/431946152/free-robux-for-kids-game-hack, which is likely part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.tw/app/431946152/free-robux-for-kids-game-hack In PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-trigon-scripts_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robux-gratis_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-ban-people-from-servers-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robux-prices_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/freer-pro-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-backpack-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-owner-admin-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/descargar-qtx-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-studio-cheat-sheets_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/can-roblox-detect-cheat-engine_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off000030b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B7 22924 bytes
SHA-256: f359bfba921c835d9acc05dd4ec48a744e9ac1ee6258a1c1113a03035a6c2cb5
font_01_sfnt_off0000643e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643E 19012 bytes
SHA-256: afbbc6672e5e67d3d08182cb82f0154e2527ac7a9675429207b3e1307e5db0cb

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