Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffb75e9626558596…

MALICIOUS

PDF

35.5 KB Created: 2021-06-19 14:57:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5e69c4f5de888f33062f964acc0806bc SHA-1: ac7e17e31e57930aa9b8987410b1092f81236e54 SHA-256: ffb75e9626558596d3f9358d3fbb84445aa2116e48dcead518e052a1e1f5ec25
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on offers for free game currency or hacks. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The document body and embedded URLs strongly suggest a social engineering tactic to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/free-robux-windows-no-survey-game-hack In PDF document text
    • http://internetdeputy.com/images/free-robux-rbxrewards_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/ilum-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/robux-game_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/roblox-face-err-free_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/roblox-tips-and-hacks_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/get-free-robux-now-2021_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/hack-des-robux_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-gg-robux_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-robux-capatcha_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-1-million-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/free-school-campus-roblox_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/fly-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-coin-master-gifts_GM406889139.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_off000030f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F7 22628 bytes
SHA-256: b26a477297399d593815b204eaa2b53877588a52d5d92484a06418e49fbfa107
font_01_sfnt_off000063ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CA 19668 bytes
SHA-256: e9bce2cee45936b66755f7f753019cd24864b02ba1beefd142d325573e957377

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