Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a3620143db60d49…

MALICIOUS

PDF

42.8 KB Created: 2021-05-15 07:48:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0043a078a4807a64418fb9732408b115 SHA-1: 2eebf1f5a9f2786def766af199617e9be268f7ed SHA-256: 1a3620143db60d49c53b93fdc28d236ff2d1498cc4e9e7844e8d03628c79a4d2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'free generators'. The primary malicious URL identified is https://netcdn.xyz/app/406889139/hack-coin-master-without-verification-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to exploit user interest in free game items to redirect them to malicious sites, likely for further malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/hack-coin-master-without-verification-game-hack In PDF document text
    • http://grugliascogiovani.org/images/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://grugliascogiovani.org/images/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://grugliascogiovani.org/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://grugliascogiovani.org/images/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://grugliascogiovani.org/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://grugliascogiovani.org/images/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://grugliascogiovani.org/images/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://grugliascogiovani.org/images/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://grugliascogiovani.org/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://grugliascogiovani.org/images/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://grugliascogiovani.org/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://grugliascogiovani.org/images/coin-master-hack-unlimited-spins-apk_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
stream_003_off00004bef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BEF 25176 bytes
SHA-256: 8e489daa24fc32274ea03c83b4c9608c1894ffa7c32b3f3fb61ba64acd4eedc7
font_01_sfnt_off000084de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84DE 18356 bytes
SHA-256: aefaa71949a7bdb31c5263769784b91b60fa36dc046093ce5bdaf3e1e31da4c1

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