Malicious PDF — malware analysis report

Static analysis result for SHA-256 465d62676ce319ab…

MALICIOUS

PDF

46.2 KB Created: 2021-06-03 07:10:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 4b64de9d8050fb74fcc8e7a455711ecf SHA-1: 07d7f4c7638821beabf10c9111b91bbb4c4f8ab8 SHA-256: 465d62676ce319abfb1cb25c89b67fc569bf0f62d0fc77209d8dbf6b8adddde6
160 Risk Score

Malware Insights

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

The PDF document contains multiple links, including one pointing to 'netcdn.online', which is flagged as a malicious redirector. The document body and heuristics indicate a lure related to game hacking, specifically for Roblox, to entice users to click the malicious link. The presence of embedded URLs and the ML classifier strongly suggest malicious intent, likely for phishing or malware distribution.

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/how-to-hack-a-roblox-account-easy-game-hack In PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-roebucks_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-demon_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-do-you-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-roblox-app_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/best-free-gun-models-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-discord_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
font_00_sfnt_off00005179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5179 26952 bytes
SHA-256: 7aa480ecf8e73b80f0e26991a6e235d227354ed168ebbb75e41189c8561900c1
font_01_sfnt_off00009054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9054 18772 bytes
SHA-256: f0aa2a8f008262e8aa636f08cdffff7c9568ae6e0bf5f389be1472b9a6879674

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