Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7f18948515c31ce…

MALICIOUS

PDF

36.0 KB Created: 2021-06-23 02:33:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2e98111d526cbafefcd1b02d12a865d1 SHA-1: 40c9edbf468f66d48f6bee6a4bb433c355124088 SHA-256: d7f18948515c31ce10e3d0d5ab3786d655caa220a0353b441fb3f8ecea2b697c
82 Risk Score

Malware Insights

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

The PDF document contains multiple links to external websites that are advertised as game hacks or generators for in-game currency. The ML classifier strongly flagged this PDF as malicious, and the presence of these lures suggests an attempt to trick users into downloading potentially harmful content. The primary IOC is the redirector URL which likely serves the malicious payload.

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/compile-roblox-hack-dll-game-hack PDF link annotation
    • http://www.furuihp.com/Public/upload/editorfiles/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/roblox-top_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/pokemon-go-free-pokeballs-code_GM1094591345.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/rbx-free_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-make-your-avatar-really-small-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-and-tickets-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/claim-free-robux-now_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
font_00_sfnt_off0000337c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x337C 22900 bytes
SHA-256: 53b320a54df47e5753b2c690f08b73942262f7e13f1d3e4937d0b6797815807d
font_01_sfnt_off000066f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F9 19380 bytes
SHA-256: 499a25de18dbc367e09b959b84181aa12142b2f6f74bdb8c288aa3824c45da0a

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