Malicious PDF — malware analysis report

Static analysis result for SHA-256 a83ca95f7870061f…

MALICIOUS

PDF

38.3 KB Created: 2021-05-10 15:31:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 62b330400677fc49cab893061cdc0fba SHA-1: 0f208fdcdd7ad4f2c8f11e12f4e6e03201e3b6d7 SHA-256: a83ca95f7870061f7d9639eea60457a9c31b34cd07940e29b44e6232fb5e0748
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a clear call-to-action to download a "Coin Master Hack Mod Apk" and embeds a URL pointing to known malicious redirector infrastructure. The document body also contains obfuscated text and a link that, when clicked, likely leads to the download of a secondary malicious payload. The presence of a malicious redirector link strongly suggests an attempt to deliver malware.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

Heuristics 3

  • 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.
  • 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 https://netcdn.xyz/app/406889139/coin-master-hack-mod-apk-3.5-8-game-hack In 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_003_off00003471.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3471 27600 bytes
SHA-256: 602bd9a06b38d11063a774d59583b30bb9c32a037be440b409867f2c251801cf
font_01_sfnt_off00007347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7347 18652 bytes
SHA-256: b0e55ddf4991cb276b5bfbc4cc9264f1bb1539d109e205f1d0e17b9dcba1a9e4

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