Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4bab14975cef2fe…

MALICIOUS

PDF

47.0 KB Created: 2021-06-03 13:12:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 26295da45098e9808ca66cf858b8b8e5 SHA-1: 48148bd584d05ca067ed75cf93324b458e268209 SHA-256: e4bab14975cef2fe3b246fa4f746b2a27ee8e3022ed38675d9e7e508c99d887c
76 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and game hacks, directing the user to a malicious URL. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs further supports this. No scripts were extracted, but the document's structure and content suggest it is designed to trick users into visiting a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/free-robux-games-on-roblox-game-hack PDF link annotation
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/websites-to-get-free-robux_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_004_off000053f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53F2 29256 bytes
SHA-256: 1ff7feb32b603a47222150b8b5f004825ddffc303a13ba6ca293a8f7345a64ed
font_01_sfnt_off00009517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9517 18576 bytes
SHA-256: 121d272924a8948b6bfdf19867642727f57edf659587de43eb46571e5003926c

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