Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e5303c76d1d551a…

MALICIOUS

PDF

46.5 KB Created: 2021-05-17 16:35:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 829d8b684f3b6c2961d2b3eee9d529ad SHA-1: 52280921eda69ce8d2d29658372e8c064527d822 SHA-256: 8e5303c76d1d551a72845c68db6a7dc884e58719bf47f01f5f41dded45b1cbb6
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common credential phishing and scamming tactic by presenting lures for game hacks and free currency, impersonating brands like Facebook and Roblox. It contains multiple embedded links, including a primary malicious redirector at `https://netcdn.xyz/app/431946152/roblox-free-clothes-girl-game-hack`, which is designed to lead users to potentially harmful sites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/roblox-free-clothes-girl-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/roblox-free-clothes-girl-game-hack In PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/freespins-coin-master_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/xray-hack_GM479516143.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-free-spins-cheat-deutsch_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
font_00_sfnt_off000049bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49BD 26724 bytes
SHA-256: 6ebdd0151a67c7c82eea020282ed8b2fe073956af7e0b795c12aaed23e04da4a
font_01_sfnt_off0000888e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x888E 3096 bytes
SHA-256: d05729863dc05721ada29044278030255eeda038236568e8246a87d3a8573d6e
font_02_sfnt_off0000933a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x933A 18340 bytes
SHA-256: 43b97e088e2ffab0722e8ce3b94223e5cd299235dccb62a3edb2f682d17634b7

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