Malicious PDF — malware analysis report

Static analysis result for SHA-256 1368b4e21d2e7c4a…

MALICIOUS

PDF

35.4 KB Created: 2021-06-26 21:23:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fa595c049a6f2ac772b679c1dd200370 SHA-1: c1866a5e7f27e28d5dfdb1f973c5bb950ff7cc30 SHA-256: 1368b4e21d2e7c4a3234836bae3c801e89c66f33be64831301b1147f72473572
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with malicious links. The embedded URL http://netcdn.co/app/431946152/free-roblox-redeem-codes-that-haven't-been-used-game-hack is flagged as a known malicious redirector. The document body and numerous other URLs suggest a scam related to game cheats and currency, likely leading to further malware downloads or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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
  • 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/free-roblox-redeem-codes-that-haven In PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/roblox-funny-t-shirts-free_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/roblox-account-taker_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/hack-coin-master-xyz_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/roblox-assassin_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/getrobux-come_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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
font_00_sfnt_off0000329a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x329A 22184 bytes
SHA-256: 94d69b2b89a701b4a5bc40aaac728246c1d0d892eeea70bf67112d090b438b6c
font_01_sfnt_off000063fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FC 19532 bytes
SHA-256: ed1a271d77dd28507a13a6c9948a4e99f98b089f0d22dfd2315ab6a86dc12928

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