Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d4e68861061a3e2…

MALICIOUS

PDF

30.2 KB Created: 2021-07-19 09:03:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ea0d4d696748a63f9372094753fb57e7 SHA-1: 781cdb5684a2dfd2745a397a8ae1bf4e8977f5f2 SHA-256: 0d4e68861061a3e2caee9f485c167df6240587e42e676b43c09fb0787f152915
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically `http://netcdn.tw/app/431946152/free-robux-site-game-hack`, which is presented as a 'free generator / game hack'. The document body reinforces this lure with phrases like 'Free Robux Site' and 'CLICK HERE TO ACCESS ROBUX GENERATOR'. This indicates a social engineering attack aimed at tricking users into visiting malicious sites, likely for financial scams or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8523

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-site-game-hack In PDF document text
    • https://e-learning.mtsn8ngawi.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn8ngawi.sch.id/__statics/gudangsoal/files/minecraft-hack-mod_GM479516143.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_off0000227a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x227A 22308 bytes
SHA-256: 304b749837a081c1d4a50d9f3f1b489a77baef404d87f033e237e15605b3ca04
font_01_sfnt_off000053e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53E7 18424 bytes
SHA-256: c0d7bb3eba240c0acc2967dceb91a93ff2e46c3e83fa83925ba0344f28cc5f97

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