Malicious PDF — malware analysis report

Static analysis result for SHA-256 aca95e0c87c49216…

MALICIOUS

PDF

44.5 KB Created: 2021-06-04 02:23:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1c34769f7af881884928ac1761290875 SHA-1: b68178dfddfb98dbf6d52a7a8b7f27b978fd5116 SHA-256: aca95e0c87c492163958d2dfecce50b7b24eb69fc59db99b97939d592ee59033
200 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors, masquerading as game hacks and impersonating Microsoft to trick users into clicking. The primary malicious URL identified is https://netcdn.online/app/479516143/minecraft-education-edition-free-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing and redirection attempt, likely leading to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/minecraft-education-edition-free-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.online/app/479516143/minecraft-education-edition-free-game-hack In PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/robux-app_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-tiktok-likes-75_GM835599320.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coins-master_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_off0000547d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x547D 24852 bytes
SHA-256: 42c8789f06f894dc16a9d5f88ba3b49155fda9e4e33e3bd41d69c26d831392b5
font_01_sfnt_off00008c4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C4A 18024 bytes
SHA-256: 50b2d5ff22f0b3ffa840834f12cbec9953eabd3c4e347b5eb6eb3aff22325aed

Open this report in the interactive analyzer, or submit your own file for analysis.