Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b92962a4d3bbafb…

MALICIOUS

PDF

35.5 KB Created: 2021-07-07 19:18:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b7800a19f3bd02a042d4490c0beb5935 SHA-1: e1220b58b0760f07f2718fa343c536fa561cba55 SHA-256: 2b92962a4d3bbafb51bc958ff241c1a4e4ae4851a56c896f7c8a2fa987ff4c90
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and 'game hacks', directing users to malicious URLs. The ML classifier strongly indicated maliciousness, and the embedded URLs are associated with scams. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or scamming attempt, likely involving redirection to further malicious content.

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.tw/app/431946152/free-robux-generator-no-human-verification-2021-game-hack PDF link annotation
    • http://samavetpharm.com/userfiles/files/free-credit-card-for-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-robux-on-ipad-mini-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-no-human-vertificc_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-vending-machine_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/minecraft-pe-free-apk_GM479516143.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
font_00_sfnt_off000030b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B5 22788 bytes
SHA-256: 3207053bc29bfa00dcf2b522add4f2b3657b8930a1081f77f0205db3e37f0a0c
font_01_sfnt_off000063c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C7 19736 bytes
SHA-256: 09f061b847c63ff59f035118bd628253d90c30315b77b042e81f05fdb0d3e9b1

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