Malicious PDF — malware analysis report

Static analysis result for SHA-256 e76af3b9f88825cb…

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 05:23:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3bff6d56177d81cf456fb2f4de93f140 SHA-1: f49178088ba601289c567c86904d5402779a0550 SHA-256: e76af3b9f88825cb54cc76f59cbdbe142324efba5daa9b5a5b159afca791e510
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded links and the nature of the lures indicate a high likelihood of this document being used to deliver further malicious content or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/406889139/free-diamonds-coin-master-game-hack In PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/client-minecraft_GM479516143.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-android_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_004_off000052d1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52D1 26292 bytes
SHA-256: 0f1bf82ac46f25f120d901cbe3adca3625c0ba1ba27155202d984a5969539711
font_01_sfnt_off00008e87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E87 18312 bytes
SHA-256: 023a9ba599e82108ef095f60474bccbb9207093afb07317a246e7535a81f1180

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