Malicious PDF — malware analysis report

Static analysis result for SHA-256 5881338e12f2010f…

MALICIOUS

PDF

45.2 KB Created: 2021-06-03 14:43:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 696f932d915d5ce437fbc612f9f3b673 SHA-1: 2f97d514fd3f8b2ad40e7f8137fababd302c13fc SHA-256: 5881338e12f2010f7cae244f4197fee24d6b0136582f328d7397b967aebfa98c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and includes multiple embedded URLs pointing to potentially malicious sites. The primary URL, https://netcdn.online/app/431946152/is-there-a-way-to-get-free-robux-game-hack, is flagged as a redirector for game hacks. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to trick the user into navigating to a malicious resource, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/is-there-a-way-to-get-free-robux-game-hack PDF link annotation
    • http://lib.kesdammedan.ac.id/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/robux-robux_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-master-daily-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/tiktok-free-98_GM835599320.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-minecraft-client_GM479516143.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_off0000523e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x523E 25180 bytes
SHA-256: 7212297c41a7a7dea2a027a96a80e045cb5649e6b173aad44a91f5ae2ce68a87
font_01_sfnt_off00008c6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6B 18892 bytes
SHA-256: e2ca2daecae93cd27ff1d51a172310d30bada5b25af9f9600d3ad780ee102f76

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