Malicious PDF — malware analysis report

Static analysis result for SHA-256 50ea0176466e3f38…

MALICIOUS

PDF

43.5 KB Created: 2021-05-10 19:32:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: f3c8df975d250ed18cca4cf2008d7c16 SHA-1: 0e2da2bd6153263df628d59475410bf8428e5bb4 SHA-256: 50ea0176466e3f38906aa8d1b13595589da07822b48838e0d8d7377c728f9afc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/479516143/free-minecraft-account-and-password-2021-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or social engineering attack aimed at redirecting users to potentially harmful content.

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/479516143/free-minecraft-account-and-password-2021-game-hack In PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/give-me-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-coin_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-free-no-download_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_off00004c41.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C41 25640 bytes
SHA-256: 8db77c33f6c858f05cd90f6430baafe83dd829053825f4bb0d5b284e186bdbb8
font_01_sfnt_off0000866f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x866F 18744 bytes
SHA-256: 32e597d278032ff7c82e1179504235c91567bf80b74fa8ae34959daeb6a42353

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