Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5062f882c7fa0d0…

MALICIOUS

PDF

34.9 KB Created: 2021-07-02 08:37:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f384939535744d611d3e645038074345 SHA-1: 7f16e6d912ab7bd894dad6b4e6305dc02e875701 SHA-256: e5062f882c7fa0d02720df81c78b86079725750f6dc92cc55429a99770107322
160 Risk Score

Malware Insights

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

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising free game hacks and generators for popular games like Roblox. The document body and heuristics confirm the intent to lure users to these malicious URLs, likely for further exploitation or malware delivery. No scripts were extracted, but the presence of malicious links and the ML classifier output strongly indicate a malicious document.

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/uno-reverse-card-roblox-free-game-hack In PDF document text
    • https://ciudadata.ec/images/ckfinder/files/roblox-wings-gear-free_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/roblox-apps-info-roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/flood-2-roblox-hack_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-robux-codes-2021-mobile_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/apk-hack-for-roblox_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-2021-accounts-roblox_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/400-robux-free_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/hack-kick-script-roblox_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/robux-free-com_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-hack-mad-city-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/cheats-for-roblox-prison-life-20_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/2021-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-free-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

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_off00003182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3182 22560 bytes
SHA-256: 2de9921e6717ff427b0b24d13bb290fbd8c37668c2206d0639d6fd8690a60256
font_01_sfnt_off0000639a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639A 18940 bytes
SHA-256: 5b9a2041066d69a387e510c9539a7bebeb2139e304dccbd58930d0f25e455410

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