Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b2a8cdf07b978da…

MALICIOUS

PDF

50.8 KB Created: 2021-05-14 12:37:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 33178b51241d8ecbb32317fa707429c3 SHA-1: 5fcb297f19c6bf4ab5d78d4c78a9d961f525e523 SHA-256: 9b2a8cdf07b978dacf7c0d1a0fccb05e14c721bdab4aec8a9abdfcec4b12055e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to a known malicious redirector infrastructure. The document body and heuristics indicate a lure for game-related cheats, specifically 'Robux', which is a common phishing tactic. The embedded URLs likely lead to further malicious content or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9348

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-to-get-more-robux-game-hack In PDF document text
    • http://dieter-sauter.com/images/mc-hacks_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/robux-offers_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://wolfzscriptsIn 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
stream_003_off00004a8a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8A 37640 bytes
SHA-256: 0752f04fe23bcee89abc14ab7086decf1fb3783cb8b097a6ffd612c46009f55d
font_01_sfnt_off00009ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB9 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off0000a469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA469 18312 bytes
SHA-256: b63754bab8a539e11eebb32f86c31dbe9ceb60be690df901f3a3ba32c84f6f1e

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