Malicious PDF — malware analysis report

Static analysis result for SHA-256 794ddd9c039b1397…

MALICIOUS

PDF

35.5 KB Created: 2021-07-05 13:07:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a7871794ff882870d07654a4e0f36a54 SHA-1: 793831539007ed318ce906f8329ab7d5efe0a6cc SHA-256: 794ddd9c039b139730b680a297ddc0dc63c668ff2f273d9359fb85eaf380d301
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free Robux, directing users to a known malicious redirector. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URLs and the nature of the lure suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

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/promo-codes-to-get-free-robux-game-hack In PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-roblox-accounts-v3rmillion_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/roblox-free-audios_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/login-robux_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-robux-no-scams-2021_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/coin-master-village-4_GM406889139.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/how-to-hack-robux-into-your-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-robux-discord-servers-2021_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-robux-place_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/how-to-get-anything-free-on-roblox-ios_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/how-to-hack-people-on-roblox_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_off00003122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3122 23008 bytes
SHA-256: 621ade42e50f06f50c792aa1817c8787fcb98d5cfed03854977993d18bd9dec6
font_01_sfnt_off000064d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D7 19408 bytes
SHA-256: 33ce494440ad385d813675e202d0582184282b0a964bafd641ab8940aca64bdd

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