Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab6c349b63596df7…

MALICIOUS

PDF

46.3 KB Created: 2021-06-03 10:39:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c62fad515ef91db20d3b7b5499cf7493 SHA-1: 59433ac2fab9cd0d08897235d3070f5438fe6afa SHA-256: ab6c349b63596df7405e382fdf7a63fccfb4143badb2457378787e0641a73521
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1071.001 Web Protocols

The PDF document contains a lure related to 'free Robux' and impersonates Microsoft, directing users to a suspicious URL. This suggests a credential phishing or malware distribution attempt. Although no scripts were extracted, the embedded URL and the nature of the lure strongly indicate malicious intent, likely involving exploitation of user trust to achieve initial access.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.online/app/431946152/get-me-robux-for-free-game-hack.
  • 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.online/app/431946152/get-me-robux-for-free-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-devil_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/robux-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-followers_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-can-you-get-free-spins-on-coin-master_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000503c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x503C 24384 bytes
SHA-256: eca42c17db976aa9112336321cccc31fa8ca9f878c5bd066ab97d947d0aa1e40
font_01_sfnt_off000087f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F0 2880 bytes
SHA-256: a2abb16672545dc40f4313872ce9cfa8d16eaf92960bd568423d37121421eaee
font_02_sfnt_off000091dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91DD 18312 bytes
SHA-256: 932e048767bb22e6267a54c454926b1d6572868c8ffb63cd4dd0c91a684054b1

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