Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff0ecf84fd6157dc…

MALICIOUS

PDF

36.4 KB Created: 2021-05-22 15:41:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bf44475172da4629c90a9d04f137ca96 SHA-1: db3e242a6fb43916e00ef33c9770ca771cb8f385 SHA-256: ff0ecf84fd6157dc8d3ce2243834e271e63d99fde1e2b051ce8f9d1527d2473d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The document body explicitly mentions 'Free Robux Gift Card Codes' and 'CLICK HERE TO ACCESS ROBLOX GENERATOR', indicating a phishing or scam attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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 https://netcdn.xyz/app/431946152/free-robux-gift-card-codes-game-hack In PDF document text
    • https://www.sitiwebjoomla.it/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/can-i-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/minecraft-marketplace-free_GM479516143.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_off00003220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3220 24952 bytes
SHA-256: 80cbb311b411adaafada7af80d8bdc84f9eeaa9e1b62dc1833800e868fcd1843
font_01_sfnt_off00006bdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDF 18640 bytes
SHA-256: ab9c735b01157041a26a1754a1ceb43d7e93b9bb6de5cba43436a791952d9cfa

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