Malicious PDF — malware analysis report

Static analysis result for SHA-256 d742550c24b339ba…

MALICIOUS

PDF

34.5 KB Created: 2021-06-28 09:42:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dbf933b1c7f8b492c2401f69f2511956 SHA-1: 1c836c9d3b035a50ccda1f3cd1f568f4d3e8bd79 SHA-256: d742550c24b339ba706c941501b117345f0867ea78eb0b3de1cab4b28ee25aeb
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. 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 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/get-free-robux-skin-tone-game-hack PDF link annotation
    • http://library.atim.ac.id/repository/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-spawn-cheat_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/which-group-has-free-admin-and-vip-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/instantrobux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hack-roblox-accounts-website_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/cheat-code-roblox-bubble_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/what-are-some-websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-developer-tools_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-gift-card-codes-unused-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hack-to-get-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/pastebin-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-a-free-group-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000030af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AF 22088 bytes
SHA-256: f08de24c151edeef30062afcaca411ced06897a2494210d4c510ec0798fa77e6
font_01_sfnt_off0000618f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618F 19108 bytes
SHA-256: ac26aa88d42ae855da54fd81ebd66bc2c29f5c0ac927492b43bb402a22483087

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