Malicious PDF — malware analysis report

Static analysis result for SHA-256 38d52b871865bef9…

MALICIOUS

PDF

44.2 KB Created: 2021-05-14 14:31:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 07984ec4267138ccf1efb37fc36e33c8 SHA-1: c4686582483e6352b5a5fdcb7dd34a8c800ef6d0 SHA-256: 38d52b871865bef90b02ac4f585339b9ad39def610936502b07ec08a3dfce3fd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-daily-free-spins-blogspot-game-hack. While no scripts were extracted, the presence of malicious redirector links and the 'game hack' lure strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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/406889139/coin-master-daily-free-spins-blogspot-game-hack In PDF document text
    • http://www.liceoantoniotoledo.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/robux-earning-websites_GM431946152.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/mathep_GM431946152.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://www.liceoantoniotoledo.com/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.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
stream_003_off000047f4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F4 28952 bytes
SHA-256: 17022ccfef9a960c49df39ddbf7c52f6a4034ca87d8cc5156482a97244cfa1f9
font_01_sfnt_off000088e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E2 18812 bytes
SHA-256: 99efaab321cd8bd4771148dad361c5d136942e4fae15d22f58752892cb19a04e

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