Malicious PDF — malware analysis report

Static analysis result for SHA-256 65da306296196445…

MALICIOUS

PDF

34.2 KB Created: 2021-06-18 06:22:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c19535318800aafbbddfa2c50b238242 SHA-1: 8066edeaa2905e17453da31de308af5eb4937fab SHA-256: 65da306296196445acc587bd46e05d4b1816a54eeb1477f2eddc4eaf9e975347
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The document contains lures for free in-game currency and hacks, directing users to external URLs for downloads. The ML classifier strongly flagged this PDF as malicious, and embedded URLs suggest a phishing or malware distribution attempt. Although no scripts were extracted, the presence of external links and the ML detection indicate a high likelihood of malicious intent, likely to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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/can-you-buy-roblox-accountsu-get-alone-for-free-roblox-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/free-robux-hax_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/get-robux-com_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hacks-para-los-juegos-de-roblox-gratis_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/all-free-offsale-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-injector-for-hacks-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-really-works-not-youtube_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/rxfastml-generator-2021-robux-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-promo-codes-2021-not-expired_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-version-download-ios_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
font_00_sfnt_off00002f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F43 22052 bytes
SHA-256: 305b8b9a313b9564a9a2de6bc506c3c4dfdd92221460603a4965d06dfc49e08b
font_01_sfnt_off00006002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6002 19236 bytes
SHA-256: 1abe77d45370636e808fd82e9faa1c0fdb8f75edb61ad4053d8342ee1c1d7b6c

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