Malicious PDF — malware analysis report

Static analysis result for SHA-256 25e9541d80d31955…

MALICIOUS

PDF

41.9 KB Created: 2021-05-14 23:31:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 09727d6766d6710ab579b8e5a24443a1 SHA-1: e2de9ac983c73ab59b86f7efbeae98379247469a SHA-256: 25e9541d80d31955385c06d25458b6e141447fdab45f22ae7f119d38c27be836
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector. The embedded URL, https://netcdn.xyz/app/406889139/coin-master-free-cards-game-hack, is likely a lure to download a malicious payload. The ML classifier also flagged this PDF as malicious with high confidence.

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-cards-game-hack PDF link annotation
    • http://www.dciprotection.ca/images/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/coin-master-game-download-free_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/abd-roblox_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-robux-hack_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_003_off00004ace.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ACE 24536 bytes
SHA-256: 12f1ea51935789bea79c4bc22cee12d75c87dc9bcad9dfa3c8c548cfd87c8cb0
font_01_sfnt_off000082b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B7 17884 bytes
SHA-256: dce98ab1a9f6331dfaabbdd57dacdba92c66b57249d10e9c2a1df39138c2a47b

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