Malicious PDF — malware analysis report

Static analysis result for SHA-256 9782900ba28dc392…

MALICIOUS

PDF

38.4 KB Created: 2021-05-22 03:41:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 561b946a88756457f97b06d2ec12a30f SHA-1: 8acbb0c9145e14c0984eddb2d0e076346a1a07fd SHA-256: 9782900ba28dc392f11827f4e27f2dcc52e074822b86adffcf29e4b47d1ab8ad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a common lure of 'free generator / game hack' to entice users. It contains multiple embedded URLs pointing to redirectors, including one at 'https://netcdn.xyz/app/431946152/rbl-gg-free-robux-game-hack', which is flagged as malicious. The document body also contains a call to action 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the deceptive nature of the content. The presence of multiple links to potentially malicious infrastructure suggests an attempt to lead the user to a compromised site or download further malware.

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/rbl-gg-free-robux-game-hack In PDF document text
    • http://stpc.it/images/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/coin-master-online-hack-download_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/games-that-give-you-free-robux_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
stream_002_off000032f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32F1 29700 bytes
SHA-256: c7dcaa721e58b1566864f03ac67dc1c7a5956c3a4ad344cf1aba113f86d03f6a
font_01_sfnt_off000074ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74BA 18376 bytes
SHA-256: 36d8e5c8df31ce5774558eb4dff236d908794f1052653b7bf9d7a2310610d2b4

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