Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3ff2d287f8a5b41…

MALICIOUS

PDF

32.5 KB Created: 2021-07-20 21:11:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 13f331693044c1e8c1d45551c7146e06 SHA-1: 4e7c74fc9ae2e2ed507eae78cba425d967ba8fdf SHA-256: e3ff2d287f8a5b41ef22fbe08e9b982234d8035db87a83bdfe0d36e9a5df3e68
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a lure promising free Robux gift card codes, directing users to a known malicious redirector. The embedded links and document body suggest a phishing or scam attempt designed to exploit user interest in in-game currency. While no scripts were directly extracted, the PDF structure and heuristic firings indicate it's designed to exploit vulnerabilities or redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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-robux-gift-card-codes-game-hack In PDF document text
    • https://madhavbaugwellness.com/wp-content/uploads/fsqm-files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://madhavbaugwellness.com/wp-content/uploads/fsqm-files/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • https://madhavbaugwellness.com/wp-content/uploads/fsqm-files/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • https://madhavbaugwellness.com/wp-content/uploads/fsqm-files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://madhavbaugwellness.com/wp-content/uploads/fsqm-files/tiktok-viewer-free_GM835599320.pdfIn PDF document text
    • https://madhavbaugwellness.com/wp-content/uploads/fsqm-files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://madhavbaugwellness.com/wp-content/uploads/fsqm-files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://madhavbaugwellness.com/wp-content/uploads/fsqm-files/roblox-hacks-2021_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
font_00_sfnt_off0000287b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x287B 22752 bytes
SHA-256: 5ce70c5c1681a9a358a7f40c639178a3b871f248eb2de5e7c314831237bcf706
font_01_sfnt_off00005b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B58 18828 bytes
SHA-256: a02e0bad934ff514df71652b6297c781be09827754414920139679bb3853bb9a