Malicious PDF — malware analysis report

Static analysis result for SHA-256 97189c7412bb5847…

MALICIOUS

PDF

77.8 KB Created: 2021-07-14 08:38:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3ba40184b1aac861d0074a1c54e18117 SHA-1: fdbfd882b8037375eb34179b61f5fa6169aa2fe5 SHA-256: 97189c7412bb5847091649111a0d2ad6f23b88bce7e44ab02b2fd86527486706
104 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of a visual download button lure suggests an attempt to trick the user into initiating a download. While no scripts were extracted, the PDF structure and heuristic firings point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7691

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://feedproxy.google.com/~r/sq/ugae/~3/AG-UZpNbJGc/square?utm_term=fast+and+furious+9+720p+download
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee2310eed6cd77ab602d65/1626219280129/parkour_spiral_mcpe_download.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e82d1a4261ba7980647681/1625828634913/generator_rex_grounded.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e90ef5320dbd0de2806816/1625886453210/how_are_the_strings_of_a_violin_tuned.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca03.bin
5b016e01c8b6ff761afede4eeb9d21775deb940ee885eb8048b83f49363b8fd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA03 10984 bytes
font_01_sfnt_off0000e3c1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C1 16792 bytes
font_02_sfnt_off0000fbd3.bin
d94205ca232f5f99d573c21c9139bfa5d617e8d23dc25dfa31a6ad5ea2be0d9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD3 17396 bytes

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