Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea220d1824059973…

MALICIOUS

PDF

33.7 KB Created: 2021-07-19 08:24:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6163009c0c5c4987078169bc75bd0aff SHA-1: 09429e8c8218e78764439f28753b118435d1c8fd SHA-256: ea220d1824059973f45d0030da507e502ac01609ee157db6dd8f18b87a0070d4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to websites promising free game currency or hacks, a common lure for phishing or malware distribution. The heuristic firings confirm these links point to malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to drive users to malicious sites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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/robux-com-free-robux-game-hack In PDF document text
    • http://oceanos.pl/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://oceanos.pl/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://oceanos.pl/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://oceanos.pl/images/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • http://oceanos.pl/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://oceanos.pl/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00002c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9B 23316 bytes
SHA-256: add8a8b149b2b3eefcb0d13a4b50d3aaf9a1e5e2f1df27a7388e22e01f17419c
font_01_sfnt_off00006143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6143 18460 bytes
SHA-256: 4a32e366c4d91d7d134c7dbb73cf2529d0f331c5de2309c0ca0f4850ac867bfa