Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d6214e73d7e73c7…

MALICIOUS

PDF

42.3 KB Created: 2021-05-13 16:03:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 75c1eea51fc1f307ca1a3f8abb1c599a SHA-1: 77d6c8a2d4bda15c672e5354d4d60df6204865c8 SHA-256: 6d6214e73d7e73c7099f3aeda69a7ec9ec3b0707c69f78ca84bd8bbed20c73da
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free in-game currency, directing users to a suspicious URL. The presence of embedded URLs and a high ML classifier score indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially malicious content or initiate downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/how-to-get-free-spins-in-coin-master-2021-game-hack PDF link annotation
    • https://kalendarite.eu/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/free-roblox-money_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/freespins-coin-master_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://kalendarite.eu/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • https://kalendarite.eu/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/oprewards-robux_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • https://kalendarite.eu/images/202100-free-spins-coin-master_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_003_off00004922.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4922 24832 bytes
SHA-256: c9f054569955b109e2ff435edcc31e2348130a258fb9da296e179bde43fc3d94
font_01_sfnt_off00008239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8239 18452 bytes
SHA-256: 614b442f464a30c8e1247073dd83761b8901fda729b002daf0f1775ab60cf60b

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