Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b397af853906179…

MALICIOUS

PDF

47.5 KB Created: 2021-06-11 07:47:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 53df3819423a934be227416ddf76943e SHA-1: 17058ecf48099fcacec5a952d3d3660ad1447926 SHA-256: 9b397af8539061793683d7a21276bd8998dae31186073289581106da626f510e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links to external websites, many of which are structured as SEO-optimized PDF repositories for game-related cheats and downloads. The document body and heuristics indicate a lure for free game items, likely leading to phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded URIs suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/free-roblox-accounts-with-pins-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/pokemon-go-free-download-ios_GM1094591345.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hacking-roblox-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/oprewards-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-verification-or-email_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005169.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5169 25368 bytes
SHA-256: fc3aa6810bec8a2d8d42dd93d482c4fb3feea04d566cbcfd929eb2265d210126
font_01_sfnt_off00008bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF3 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00009593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9593 18828 bytes
SHA-256: 1f44e2983df983a16b2f30651d3ac37a1ab45750fd2700a0f0ebbc65e7114a98

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