Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3d7794000bd2286…

MALICIOUS

PDF

30.4 KB Created: 2021-07-19 02:05:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dec85778b0f7c9fea321a8ab8cf5589c SHA-1: d5bba3cebdc8d93cb1099b561882d9710cbe1392 SHA-256: d3d7794000bd22866358d8933728bf010e6151d050693643f8be377d9efc509b
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 0.9184

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/free-minecraft-alt-generator-game-hack PDF link annotation
    • http://www.dciprotection.ca/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://www.dciprotection.ca/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-tiktok-app_GM835599320.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_off00002655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2655 21976 bytes
SHA-256: 7fd013f8e0391854e853f1c4775a8131cb082c80cfa65c84d13bffd01cdf4931
font_01_sfnt_off00005698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5698 17784 bytes
SHA-256: 66ae3cfb6d310f144f42187aaa203441353bb0cc88c1a3915b2f7a14fa3c41b8

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