Malicious PDF — malware analysis report

Static analysis result for SHA-256 79a8a5b932a82cdb…

MALICIOUS

PDF

44.3 KB Created: 2021-05-16 23:04:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0295491d8ee7edbcc4a2f8d7757805b3 SHA-1: 249f8f081739042080c82168e437234548e7c6c9 SHA-256: 79a8a5b932a82cdb320270917501ab2554f87731661bc9b276e097eac050443d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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 https://netcdn.xyz/app/431946152/how-do-you-earn-robux-on-roblox-game-hack PDF link annotation
    • http://lawpatron.ru/images/moon-active_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/daily-free-spins-coin-master-app_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
stream_003_off0000482c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x482C 28672 bytes
SHA-256: 3872831b8ca06dac8ad29b67cfa4bf88ab713e7036991c1a80a33d01c8ac68b6
font_01_sfnt_off000089d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D0 18644 bytes
SHA-256: 101d287b90a3798bf945b9e309dfc26ee4a82cf5cf33fc5f39034681ca663b5b