Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ab00e6dda2256ad…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 10:39:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 19db6503c38b85fdb237ad4d823d1c7e SHA-1: 065c8cfe0b576130a616469d94bea5d0f2e54cbc SHA-256: 5ab00e6dda2256ad2108dab8b9ab2f815f62ab245b579ac5ec6540f0b834278c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links to websites that promise free in-game currency or items, a common lure for phishing and scam operations. The PDF_SEO_LINK_FARM heuristic indicates a large number of these links were generated, likely to improve search engine ranking for malicious content. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure suggest a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/free-robux-hacker-us-game-hack PDF link annotation
    • http://abdinusababellibrary.ac.id//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-spins-twitter_GM406889139.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_off00004cc7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CC7 25184 bytes
SHA-256: 4e856d895f68719ebb503a7f923897673af916f70bdfae0b0c12ca4665ba85b1
font_01_sfnt_off0000861d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x861D 18600 bytes
SHA-256: be32b0f906764c1f2317decc7ac5a24a5975e1ace61028a3a9703984df87bb8b

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