Malicious PDF — malware analysis report

Static analysis result for SHA-256 24065cdce695cfd7…

MALICIOUS

PDF

44.0 KB Created: 2021-05-12 15:56:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 372cbdf8350ec18e58175b67473cb7ae SHA-1: baeedfb60bf27d12876d51c3153255e307596cea SHA-256: 24065cdce695cfd7122c799367386b2fec3cd942d51e359a15fe710dea6fd129
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on offers for game hacks and currency. One primary link, 'https://netcdn.xyz/app/431946152/code-free-robux-game-hack', is identified as malicious infrastructure. The document body and embedded URLs reinforce this lure, suggesting a phishing or scam attempt to redirect users to potentially harmful sites.

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/code-free-robux-game-hack In PDF document text
    • http://kundentest.de/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://kundentest.de/images/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://kundentest.de/images/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://kundentest.de/images/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/hack-coin-master-for-android_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://kundentest.de/images/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://kundentest.de/images/body-roblox_GM431946152.pdfIn PDF document text
    • http://kundentest.de/images/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://kundentest.de/images/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • http://kundentest.de/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://kundentest.de/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/coin-master-village-4_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://kundentest.de/images/wurst-client_GM479516143.pdfIn PDF document text
    • http://kundentest.de/images/how-to-hack-coin-master-spin-ios_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_003_off00004a81.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A81 27740 bytes
SHA-256: 068a52f5e241faebf9ef5502092892e5156715e523cacdfdcc40d19268ec607d
font_01_sfnt_off000089e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E8 18188 bytes
SHA-256: 00280273b0975bee0187bf1a1cc0e29ac13cf800f2976c84d5f4ba53341fee41

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