Malicious PDF — malware analysis report

Static analysis result for SHA-256 693839dbd86288e5…

MALICIOUS

PDF

45.2 KB Created: 2021-06-08 22:24:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 26de0535bb7905aab5978ab9f9bcb3c3 SHA-1: bbf1d7d393d836a9e5d41e5a2c4d1391b2d51e99 SHA-256: 693839dbd86288e50b7ca1ad71bf6c2565ae811e71ffea63a6629e374fd3c157
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 0.9865

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 https://netcdn.tw/app/431946152/free-roblox-gift-card-numbers-game-hack PDF link annotation
    • https://slims.bakrie.ac.id/textbook/repository/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/clients-minecraft_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-robux-on-roblox-instantly_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/get-free-robux-by-inspect_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • https://www.micIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005071.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5071 26628 bytes
SHA-256: 5086910bf9d92abd27b2287ccfce14f9d480ab6fe57049b6f9b096ce922f7279
font_01_sfnt_off00008bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BEA 18972 bytes
SHA-256: 726b2303326804ec4cc11027c6c212da023043823ae38162a3e0f2a75b9eb72b

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