Malicious PDF — malware analysis report

Static analysis result for SHA-256 7031b8e892c81ec9…

MALICIOUS

PDF

34.9 KB Created: 2021-07-09 12:08:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f262458d9f201a204f98e40115d0ced3 SHA-1: 118ad37d3fcd1fe1fae4d37fbd7aaa3735684760 SHA-256: 7031b8e892c81ec929a74e114592122de19f5e50890aa5f07a632d321809aeef
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a lure for game hacks. The document body, though partially garbled, includes the same URL, reinforcing the malicious intent. This suggests the file is designed to trick users into visiting a malicious site, likely for further exploitation or malware delivery.

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/479516143/best-free-minecraft-server-hosting-game-hack In PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/how-you-get-robux_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/hack-week-2021-roblox_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/hacke-bubble-gum-simulator-de-roblox_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/how-hack-naruto-final-bond-roblox_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/roblox-robux-hack-2021-download-no-survey_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/roblox-download_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/si-un-hacker-te-sigue-en-roblox-te-puede-hackear_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/real-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/cheat-codes-in-phantom-forces-roblox_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/roblox-change-your-username-for-free_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/card-codes-for-free-generator-roblox_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/how-to-hack-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.markettraderacademy.com/uploaded_files/userfiles/files/minecraft-java-edition-download-free_GM479516143.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_off00003373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3373 22628 bytes
SHA-256: ee43cd8bfa16056a0231df92da79c480267a28c48791cd1e81ab056609d7641d
font_01_sfnt_off000065a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A2 18328 bytes
SHA-256: 0b2d28431e5234c57104fb234e5f183f246f5a4819408a3d571d7ab08b18c1e5

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