Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f46f2d5acb04212…

MALICIOUS

PDF

45.0 KB Created: 2021-06-09 10:50:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 11750cc18975429080454e4169115d49 SHA-1: 0037fbdde81e614fe6e6601a50c35eb9ee5432c5 SHA-256: 3f46f2d5acb042123be59f2867ff499e5555662222abd90f3217cd9cf4009628
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded URLs and a lure related to game cheats and VIP status, suggesting a phishing or scam attempt. The presence of a callback lure indicates a potential for social engineering to resolve issues or provide support, which is often used to mask malicious activity. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/how-to-be-vip-in-free-paint-roblox-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-18_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-client_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-app_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
stream_004_off0000503a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x503A 25576 bytes
SHA-256: 9cbcd10530453b408591089bd7cf24c2131cf3c9017a2d0b303e775128b0929b
font_01_sfnt_off00008afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFA 19028 bytes
SHA-256: c4cf98425e4480d92e0e96e89a6f89e6562bf48fd8cf5cb396f105bc9e657332

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