Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b28b59d18c06b5f…

MALICIOUS

PDF

37.2 KB Created: 2021-05-25 08:33:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5312e5bd270ee9dcc3d3315fe4af36c9 SHA-1: 936a95b18f76957467588dc08fbf9ccd0cec7ece SHA-256: 0b28b59d18c06b5fc3a94f0899344cc6438c39439c6c586d3688ed0ba7da76fb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains social engineering lures, including a 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' call-to-action and instructions to press Win+R or paste a command, indicative of a ClickFix attack. It also embeds external URIs pointing to what appears to be a game hack download, suggesting the document's purpose is to trick users into downloading and executing further malicious content. No scripts were extracted, but the embedded URLs are the primary indicators of the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.xyz/app/479516143/free-minecraft-servers-to-join-game-hack PDF link annotation
    • http://perpustakaan.stikim.ac.id/slims/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • https://code.giftcards.comIn 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_002_off00003684.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3684 25660 bytes
SHA-256: 1873a17f5d9670904253993d796f9e18a5f9e24c041821af29c0672ee78c0a31
font_01_sfnt_off00007114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7114 17992 bytes
SHA-256: f4dddb1eb99788babbc28e2933b16aea696a65c0930c8e69ff3f00d50dcb50ca

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