Malicious PDF — malware analysis report

Static analysis result for SHA-256 c03c8382e453f4b5…

MALICIOUS

PDF

45.0 KB Created: 2021-06-02 22:12:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 87f453ee28fc0a75dc6e6d93890ab4d7 SHA-1: cfbe90cfe536a2d3a17cb342c70e8c36efc8aaad SHA-256: c03c8382e453f4b510e712f4da1fc9cdc387ffc14b85f64f7fb038fa73b0dc45
82 Risk Score

Malware Insights

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

The PDF document contains a lure for game hacks, specifically mentioning Roblox, and embeds a URL that redirects to a malicious domain. This suggests a phishing or social engineering attack aimed at tricking users into visiting a site that likely serves malware. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/431946152/roblox-area-14-hacking-game-hack PDF link annotation
    • http://berntfoto.dk/images/roblox-re_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • http://berntfoto.dk/images/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-today_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-website_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • http://berntfoto.dk/images/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://berntfoto.dk/images/coin-master-free-spins-link-blogspot_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
font_00_sfnt_off00004e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E92 26344 bytes
SHA-256: 80472f66aedde57cdec89bf8700ccde7420d60db3a896587a745ce947db1af5a
font_01_sfnt_off00008bdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BDD 18760 bytes
SHA-256: 3e1f2cd9723017e8c19ad0051eda6ce1ad69ad67043e16fc9810b9635bee29eb

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