Malicious PDF — malware analysis report

Static analysis result for SHA-256 42296f02d877079a…

MALICIOUS

PDF

31.4 KB Created: 2021-07-20 06:10:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 289f0710c5deb1fbb26ba19edb0e8038 SHA-1: 6b798123da425042b61e0bfc0cd714432ae57908 SHA-256: 42296f02d877079a29ef9cce7cb2a58e43c4ec1d6003f512ed7b17fbaada5e99
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 0.9893

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.tw/app/479516143/minecraft-pe-free-apk-game-hack PDF link annotation
    • https://ibelive.tw/image/data/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/minecraft-bedrock-free-with-java_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
font_00_sfnt_off000028ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28EA 22052 bytes
SHA-256: 2a51e4559c745f6c5cc52ae193c10e8013aebab3aa13530dd31a94bc0d4c36de
font_01_sfnt_off0000599c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x599C 18068 bytes
SHA-256: 35104518e66c8492531759eb706d86fdb36771bd3dd1e1625049e5bd6be6693d

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