Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fd81f53a90180bc…

MALICIOUS

PDF

34.2 KB Created: 2021-06-27 06:35:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 535dd8073dac4dd3933c40b297bcf414 SHA-1: d3ac0d3adf33e8c6b6579626a9483d9351cfcdb0 SHA-256: 8fd81f53a90180bc540dd7137da054f3f587f11fb04cbb8490ece12195c2f3a8
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 http://netcdn.co/app/431946152/roblox-free-robux-no-survey-no-download-game-hack PDF link annotation
    • http://jandimotors.co.uk/images/roblox-dinosaur-simulator-cheat-hack_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://jandimotors.co.uk/images/roblox-robux-for-free-com_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/how-to-exploit-with-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/free-robux-android-2021_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://jandimotors.co.uk/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/roblox-hack-prison-life_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://jandimotors.co.uk/images/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://jandimotors.co.uk/images/dooms-pike-brickbattle-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://jandimotors.co.uk/images/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://jandimotors.co.uk/images/real-free-robux-codes_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_off00002ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE4 21760 bytes
SHA-256: 578a7e79b1c0527b12a0462bb1e0c44ee1d352e07f9c2ecbe690275a4f59b3b6
font_01_sfnt_off00005ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA8 19592 bytes
SHA-256: 782776283769d15e91c79e09ee8acf7c7ae9f68565e27182a63dd6a5e977021c

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