Malicious PDF — malware analysis report

Static analysis result for SHA-256 7724fc5f788277ce…

MALICIOUS

PDF

42.2 KB Created: 2021-05-16 15:20:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5bc927bc909cc5555d07bb90e102a6e7 SHA-1: 2b5fcc618fedbfe6e75c21cf7511d5faba86e814 SHA-256: 7724fc5f788277ceb717eadb116db59ecd82482f8f15d97d0ba33d3beed0e68e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it links to external websites with lures related to game hacks and generators. The document body and extracted URLs reinforce this, pointing to sites offering 'free Robux' or 'game hacks'. These links likely lead to phishing pages or further malware downloads, constituting a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-robux-co-game-hack PDF link annotation
    • http://sbm-nn.ru/images/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/wurst-112_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-free-download-iphone_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
stream_003_off000047ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47AB 25712 bytes
SHA-256: 97c9b32aed84b41bfa38e742ef7680e5e2dae5ff8e6561ca95ea3d79483e71e6
font_01_sfnt_off0000835e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x835E 18012 bytes
SHA-256: 3ef9e48aa3d97d4217e004f7625a8cbae9320a74231b80a01553f6433e422360

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