Malicious PDF — malware analysis report

Static analysis result for SHA-256 70a73b65f8ab4f75…

MALICIOUS

PDF

42.2 KB Created: 2021-05-13 18:08:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 47e2c53973d75487ab93df005807c69e SHA-1: 548f923f820019686a4796f05aaa20486dd59be7 SHA-256: 70a73b65f8ab4f75020c08f274a318fbce4365e37a55cdc960fd61476d35c7e1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on a "game hack" or "free coins" generator, which is a common social engineering tactic. The primary link, https://netcdn.xyz/app/406889139/coin-master-daily-free-coins-link-game-hack, is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious website, likely for further exploitation 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/coin-master-daily-free-coins-link-game-hack In PDF document text
    • https://www.les-sp.org/images/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • https://www.les-sp.org/images/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • https://www.les-sp.org/images/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • https://www.les-sp.org/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.les-sp.org/images/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://www.les-sp.org/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.les-sp.org/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://www.les-sp.org/images/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://www.les-sp.org/images/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://www.les-sp.org/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.les-sp.org/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.les-sp.org/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://www.les-sp.org/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.les-sp.org/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://www.les-sp.org/images/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.les-sp.org/images/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.les-sp.org/images/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • https://www.les-sp.org/images/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://www.les-sp.org/images/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://www.les-sp.org/images/claim-free-robux_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_off00004afa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AFA 24800 bytes
SHA-256: 5aa54a88940985e4e77b131ba73e15d98c0429ed9cdfbc7a891151317ec55bd3
font_01_sfnt_off00008283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8283 18304 bytes
SHA-256: b2c10786a2ef705dd5d89e60f64d684b08d5fff845b0f0c55a2f5e2f1760b4c3

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