Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6df4102770c33e4…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 07:04:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: eb981561888e448c3923cba241fd547a SHA-1: bfe99c09e1dd654403f84631ee8e450bfc43f9e7 SHA-256: a6df4102770c33e43cf91b5459afc20b1bf07d36e40bbfd7546bace8999e0c85
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure, specifically targeting 'Coinmaster'. The embedded URL, https://netcdn.online/app/406889139/coinmaster-blogspot-game-hack, is likely the initial landing page for a phishing or malware distribution scheme. While no scripts were explicitly extracted, the nature of the lure and the ML classification suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/406889139/coinmaster-blogspot-game-hack PDF link annotation
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/pokemon-go-for-free_GM1094591345.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/robux-come_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/www-rbx-com_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-coin-master-spins-blog_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_off0000526a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x526A 24492 bytes
SHA-256: 8b0645166488c2f89b5f929f5d620f09efe76b76b39ac62656aa923d746c07b4
font_01_sfnt_off00008aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA1 18560 bytes
SHA-256: b6c1a4b4a396e514168379159069ddcbbdb2f4734aa5f4f24f50e1de42ff982a

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