Malicious PDF — malware analysis report

Static analysis result for SHA-256 688958452e327529…

MALICIOUS

PDF

42.4 KB Created: 2021-05-16 22:47:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 221fede745da3d10f4a027b9a8e0067b SHA-1: 248c5ffd7ecd1a331af3997a0f3a2da43a873450 SHA-256: 688958452e32752949585e649e6b6f276cd8e98c11c06fbed8d9c8528755d3dc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/coin-master-free-spin-and-trading-group-game-hack PDF link annotation
    • http://lichtdrukkerijwijchen.nl/images/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/rewards-robux_GM431946152.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/coin-master-hack-tool-v1-9-download_GM406889139.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/www-roblox-robux_GM431946152.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://lichtdrukkerijwijchen.nl/images/how-do-i-get-free-spins-in-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_off000049f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F7 25244 bytes
SHA-256: 8327de6a3a28ccc950edbed7239db0d8f357114e18cba82ffea91d2d42a89bdd
font_01_sfnt_off000082c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C7 18488 bytes
SHA-256: ce32e08b5302944e5b9e6b229062fe325a28013d564ee3f5b8458993eb3ca1e1

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