Malicious PDF — malware analysis report

Static analysis result for SHA-256 aae90a7830653509…

MALICIOUS

PDF

35.2 KB Created: 2021-07-19 09:02:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 70ca09333cb85a9c6af4e901609327e1 SHA-1: d4785d38708a9a79f2f1ebaf46342e77f742d422 SHA-256: aae90a783065350970b1fce49fb2d75a65a99e76f66dafe690a3ba5e79351cb7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that lure users with promises of free TikTok verification and game hacks. These links redirect to a known malicious infrastructure, indicating a phishing or scam attempt. The document's structure and content suggest it is designed to trick users into visiting the malicious URL, likely to download further malware or engage in credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6701

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/835599320/how-to-get-verified-on-tiktok-for-free-2021-game-hack In PDF document text
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/free-robux-website_GM431946152.pdfIn PDF document text
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://metropolemoveis.com.br/ckfinder/userfiles/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2967 22772 bytes
SHA-256: 0f43a2665ebd6b429d52f451c0f715449705ff2eff6ff0b0d78747aacbf8aadb
font_01_sfnt_off00005c90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C90 3124 bytes
SHA-256: d6dd29adb69da7f9a23a5e3791282a61e2f811794f560a0c409c8747766d9102
font_02_sfnt_off00006749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6749 18328 bytes
SHA-256: 1054070171948e30c43aa2372c28bb4586f99f9ebf927238267b96eb5d2dcf67

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