Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ea5f3a2327e8470…

MALICIOUS

PDF

52.6 KB Created: 2021-05-18 01:36:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d69d08f089f10491ca9133e09ac58018 SHA-1: d33b2465fdb9e527db32edcdf363a9ebfbb763e3 SHA-256: 8ea5f3a2327e8470728eaec17c78efda0161eb87ac8533725721b77c57302cfc
200 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. One prominent link impersonates the brand 'ups' and directs to the malicious domain netcdn.xyz. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9275

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/how-to-get-free-robux-fast-game-hack.
  • 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/how-to-get-free-robux-fast-game-hack In PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-code-hack_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/robux-online_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00005051.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5051 27280 bytes
SHA-256: f9e240c96f402e2317efeecfae1a73b78512f0aec42316f585d1101d6ea4c7c9
font_01_sfnt_off00008fd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD4 8132 bytes
SHA-256: e6d68e720ea5acf9dccbf7ffde18db6f65c62a99ab7725aa43e30329033a7787
font_02_sfnt_off0000aac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAC1 18512 bytes
SHA-256: 7aab2f7b5cdd23eaead05a2c9912e4a9dcd99cb50fd9423eae012b149ac71853

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