Malicious PDF — malware analysis report

Static analysis result for SHA-256 95abf1c1cd083cd0…

MALICIOUS

PDF

40.0 KB Created: 2021-05-22 02:09:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c82e9567e2fa8eac92af83c74cddb69d SHA-1: 3588db6843ff010a1c5ae089b6827fcb1b5b6075 SHA-256: 95abf1c1cd083cd01e8e203a98a79dfc17f9e2260f587f435ebc7c16fef200bc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and embedded text promoting free game currency and hacks, which is a common lure for phishing or malware distribution. The primary URL identified, https://netcdn.xyz/app/431946152/how-do-u-get-free-robux-2021-game-hack, is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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.xyz/app/431946152/how-do-u-get-free-robux-2021-game-hack In PDF document text
    • http://www.alpaca-buitensport.nl/images/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/minecraft-education-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
stream_002_off00003422.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3422 31172 bytes
SHA-256: 5cb778739683b9d4ec77338d1733d8109312bf408e81b6347e7d8e204dd98ad1
font_01_sfnt_off000078ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78EF 19040 bytes
SHA-256: 14ed63897d8c38c9b74f4ae6c685ddc963b8153977262fdb6411d06658c720a7

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