Malicious PDF — malware analysis report

Static analysis result for SHA-256 871ea210b3d7c2d0…

MALICIOUS

PDF

34.8 KB Created: 2021-06-18 06:11:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9ddcd8b9f255d64c3b8ce9a5cff24c60 SHA-1: d448399500a7cabe7e6a9f37b703bde30f8d37cf SHA-256: 871ea210b3d7c2d0eeafc55dc0d2a513bd32b4301076fcecaa7105b4250304a2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and Robux, directing users to a URL that is flagged as a malicious redirector. The document body and heuristics indicate a social engineering attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the embedded URLs and redirector heuristics strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/how-to-get-500-billion-robux-hack-2021-game-hack In PDF document text
    • http://dana1157.com/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/denisdaily-robux-hack_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-generator-tool-paste_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/how-to-get-free-robux-easy-no-download-2021_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/whats-robux_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D3B 23100 bytes
SHA-256: 39a2605a745a76fc61b94811d16fc3b6ff96834a83ee3d64e9d94ea5ced68f12
font_01_sfnt_off00006144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6144 19532 bytes
SHA-256: 698fd27a6df7c75750d99b0332bea23237dea68e24c24618a5ae60c8f6a109bb

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