Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e51b40829a1b62…

MALICIOUS

PDF

33.3 KB Created: 2021-07-19 04:44:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d46c1daa42cf3ca6c5a3d2167af8b7d2 SHA-1: dbe90eb68d31431571ea7cfcf778ca8841f880d2 SHA-256: 17e51b40829a1b6225539c86a9728ced0a1970f4648d4b07ef25996401462b25
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector, masquerading as a generator for game currency or accounts. The document body explicitly mentions 'Free Roblox Accounts With Robux' and includes a call to action to 'CLICK HERE TO ACCESS ROBUX GENERATOR'. This strongly suggests a phishing or scam attempt designed to lead users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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.tw/app/431946152/free-roblox-accounts-with-robux-game-hack In PDF document text
    • http://aiyta.com/images/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://aiyta.com/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://aiyta.com/images/roblox-hack_GM431946152.pdfIn PDF document text
    • http://aiyta.com/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://aiyta.com/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://aiyta.com/images/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://aiyta.com/images/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://aiyta.com/images/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://aiyta.com/images/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://aiyta.com/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off00002bf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF4 22564 bytes
SHA-256: cee500de0067cf97bddb6b8801a30c7dd2011bdc8b16c2ba063e6f5a123d4413
font_01_sfnt_off00005e54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E54 18860 bytes
SHA-256: 865574bf4c8bdee12f9e426a22e4a3f20a88a2333a4bf7711c0a9b9eff7733be

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