Malicious PDF — malware analysis report

Static analysis result for SHA-256 33cabcd0b7895d1a…

MALICIOUS

PDF

45.4 KB Created: 2021-06-08 17:22:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a50156a6adf42c19cdc6e3addf0d3e05 SHA-1: a1a7007bae33f0cc218aee1ef62912cfe5edef0d SHA-256: 33cabcd0b7895d1af09374f9686c7ce55dcec6fd14a342b2fc0cc0e0544f63de
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a lure related to game hacks and redirects to a known malicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/how-to-hack-robux-pc-game-hack In PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-robux-for-xbox-for-kids_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/coin-master-free-coins_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-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/getrobux-now_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-tiktok-likes-and-followers_GM835599320.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/easy-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.aeroplanemarket.com/uploaded_files/userfiles/files/mc-update_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
stream_004_off000052fb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52FB 26892 bytes
SHA-256: b25deeb55c42801a2391483190fac57699eb71b63f8df652ba2a1f0e1015dd6b
font_01_sfnt_off00008e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E16 18568 bytes
SHA-256: 07ae0239e9942c2a640db369170e250983af1522002d76e93f64ada255fb3dc8

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