Malicious PDF — malware analysis report

Static analysis result for SHA-256 08cca4ff3e6dcab6…

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 12:17:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 18a51c98a393a09825a9fd5e3aa4b5ce SHA-1: a4b7beb8ac5948f047c744b3770505ce89a39962 SHA-256: 08cca4ff3e6dcab6d237cd501680b9b000d3b6760a0ca98cb964c7a0a178f625
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generators' for popular games. The primary malicious URL identified is https://netcdn.online/app/431946152/get-robux-com-game-hack, which is designed to lure users into downloading potentially unwanted or malicious software. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or social engineering attack aimed at driving traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/get-robux-com-game-hack In PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/play-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-robot-animation-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-only_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_off000050a2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50A2 28000 bytes
SHA-256: d7964b33aa9d13be9b9ff2d009e7245707e4b506e9f7e7e2e56649974932d836
font_01_sfnt_off00008eb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB2 18216 bytes
SHA-256: e46bf0cf057cdcc1f24e49826db2f5998f04ba9e64eff7e45517ce854ffbd61c

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