Malicious PDF — malware analysis report

Static analysis result for SHA-256 6476835e41984188…

MALICIOUS

PDF

40.9 KB Created: 2021-05-12 08:20:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 74bf33ec65df1eceb5526a87a724fa59 SHA-1: aa0efd834361b0fd0e5d24facab7a38eacc6fd38 SHA-256: 6476835e419841880cf1b3e70f372c8aa3b88d055ee1be03b1b7a71d38d5eb51
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, strongly suggesting a phishing or scam attempt. The primary link, 'https://netcdn.xyz/app/406889139/hack-coin-master-pc-game-hack', is presented as a game hack generator, a common lure for malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful content.

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/hack-coin-master-pc-game-hack PDF link annotation
    • http://gaec.cl/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-spins-and-coins_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_off000045f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45F1 24676 bytes
SHA-256: 9823cc9e9b212fc1acc5c54e4eab5da982866d9368cfe6114f5b383bfc426651
font_01_sfnt_off00007e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E76 17868 bytes
SHA-256: d0fcbd0a52ba681250a66b5fd254fe701dbce3b80d82eca2366e1a97fce9e3f6

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