Malicious PDF — malware analysis report

Static analysis result for SHA-256 11eb982d2454fd86…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 23:57:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 65e452d06d38e34015f5fbef46ac6cfa SHA-1: fbc498c24e35e5206d54ced1364ca0b73abd2c1b SHA-256: 11eb982d2454fd8688a7a701bbaab8646e6784752393931a99c901a5d6cdb852
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector pointing to 'https://netcdn.online/app/431946152/roblox-lovenet-game-hack'. This suggests the document's primary purpose is to trick users into visiting this malicious URL, likely as part of a phishing or scam campaign. The presence of a 'download button' heuristic further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/roblox-lovenet-game-hack In PDF document text
    • http://library.umla.ac.id/repository/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/robux-earner_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-spins-and-coins-coin-master-2021-link_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_off00004e45.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E45 26828 bytes
SHA-256: 17df825fd3d7fa619e3ee50d6e3b737d2a4e875bb2957abb663e00cc59162809
font_01_sfnt_off00008ad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD2 18004 bytes
SHA-256: 02da439c4d00bd76a048f0c61589902868ef5305709eaa1e2ff1e2a8645ed3a2

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