Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecb0f0004cf65a31…

MALICIOUS

PDF

43.3 KB Created: 2021-05-16 23:38:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9e6549a12532130b07597d73174cb804 SHA-1: 004e4ed535ce40a1061505b7650c9a5e986205a8 SHA-256: ecb0f0004cf65a31fdeb526bf2f01287f5888250ac9b048080fb2f2d0e8e59b5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-robux-microsoft-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/free-robux-microsoft-game-hack In PDF document text
    • http://italianconnectionsleaford.co.uk/images/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-robux-apps-that-work_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_off0000489b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x489B 27300 bytes
SHA-256: b2901484a7cb0a585cb4281c68a696ec29ae4ce209542ba0f63760ecd43a7afb
font_01_sfnt_off00008662.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8662 18436 bytes
SHA-256: 753f3f2a839cbba740b1165c82973d17105d10f1d8ffbf22e8371d7b58d196dd

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