Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c5c67c4574b15e0…

MALICIOUS

PDF

46.0 KB Created: 2021-06-04 03:28:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9201e702c4e3bb016fda4ab5e8bc11c8 SHA-1: 47e5e28cf0ba2f73b6ef632e0e97cd06c481e859 SHA-256: 6c5c67c4574b15e021e278684e8bb13415b3b010ea6f0499c33e1ec45510e689
82 Risk Score

Malware Insights

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

The PDF document contains a lure impersonating Amazon to trick users into clicking a link for "free TikTok fans". The embedded URL, https://netcdn.online/app/835599320/free-tiktok-fans-no-verification-game-hack, does not match the impersonated brand, indicating a phishing attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.online/app/835599320/free-tiktok-fans-no-verification-game-hack.
  • 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.online/app/835599320/free-tiktok-fans-no-verification-game-hack PDF link annotation
    • http://lib.teknik.unimal.ac.id/repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/pokemon-go-free-7km-eggs-july-2021_GM1094591345.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-earn_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e41.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E41 24928 bytes
SHA-256: 53956ddcae424ef80641229dfd09862b00198579cd802ae18fcad143461d5ed3
font_01_sfnt_off00008767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8767 3124 bytes
SHA-256: b4d0a6f874623eca91bf5bc72a3cabb824ec4e9d69d3f61300b24fcbe1df707d
font_02_sfnt_off00009221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9221 17816 bytes
SHA-256: db30cff21771a834018d301e3e15668d4f696dd14c251b75c79f93eed26cd5f9

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