Malicious PDF — malware analysis report

Static analysis result for SHA-256 939bd40cfd3477d4…

MALICIOUS

PDF

42.0 KB Created: 2021-05-13 15:34:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a16faead7776fdd1fd2c01b24ab7de1b SHA-1: dcaf41c4609dcaa3b70c52e4c13149869f54c826 SHA-256: 939bd40cfd3477d4dd65cc3c9dfbda972784fd1482fe8664a3f429a8192ad7ed
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 0.9971

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-no-anti-bot-verification-game-hack PDF link annotation
    • http://ilccanada.org/images/free-800-robux_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/free-spins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/roblox-images_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/woman-roblox_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://ilccanada.org/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/get-free-robux-no-human-verification_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_off000047ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47CA 25372 bytes
SHA-256: 49e7a48c9e52ba14424aec69484ca535484f8c5b465aa5558eb742378da208b9
font_01_sfnt_off000080ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80EA 18600 bytes
SHA-256: 8cfd8c2479ee29cd4f6dba9b0ab7f96f8a0f4a4bb194f6119df547073888af7b

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