Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec9013497dd9a7c4…

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 13:50:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 429dd637c50e804d6edcf10334298d9e SHA-1: e6625fff538c3527101e3e60fa3c4954d17e68cb SHA-256: ec9013497dd9a7c406489d08442b2913f69608c31e4197bdea777553f681a63b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure related to 'free Robux' and game hacks, directing users to malicious websites. The ML classifier strongly indicates maliciousness, and the PDF_GAME_HACK_REDIRECT_LURE heuristic confirms the deceptive nature of the embedded links. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-robux-on-phone-2021-game-hack PDF link annotation
    • http://www.mostraining.co.za/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-get-more-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/cheat-engine-original-download-roblox_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-robux-hack-android_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-get-a-robux-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-do-you-get-free-robux-2021-july_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/do-you-want-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/roblox-hacks-tower-of-hell_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-animation-package-roblox_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-robux-master_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/roblox-murderer-mystery-2-cheat-codes_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-robux-no-humen-varucashe_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-use-money-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7A 22276 bytes
SHA-256: fcac3d20bbcf5b379d3a6065c241744225bf09ccd625b17316388083109f066c
font_01_sfnt_off000060e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E4 19704 bytes
SHA-256: 265cd9cc4e01e5bd54911c1682e25479b9899573a838b8ddb67dea599715535e

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