Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d0b0f8210c60f84…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 12:26:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d70c79db99d43d29355e96b5df76bfdf SHA-1: f87a43e5c00a15fa60c03414c833af233ffda693 SHA-256: 7d0b0f8210c60f8493648b21db785d1b21756d89eb7e4e352efd9c43782bea7c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on a "free generator / game hack" which redirects to malicious infrastructure. The primary malicious link is http://netcdn.tw/app/431946152/how-to-hack-someone-on-roblox-game-hack. The document body and embedded URLs suggest a phishing or scam attempt related to in-game currency or hacks. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a malicious redirector.

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/how-to-hack-someone-on-roblox-game-hack In PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-roblox-code-generator-no-download-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-to-become-admin-on-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/test-all-the-roblox-gears-free-admin_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-to-get-100-000-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/robux-free-of-charge_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/coin-master-rewards_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/coin-hack-for-assassain-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/paypal-to-pubg-uc_GM1330123889.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/unpatchable-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-no-verify_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_off00002e9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E9E 22124 bytes
SHA-256: 4759183d823f5f48804046e3ad5ae6340ece085902552b6cc78b73570092f886
font_01_sfnt_off00005f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F96 19080 bytes
SHA-256: 963276ac3658a4f1303280410bd3aafd1a833c38ea79ed0af769875644ea58f7

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