Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8ed017aecac3b30…

MALICIOUS

PDF

77.2 KB Created: 2021-07-15 23:40:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cf3a73a3092c5246bed5fda4b03fc0e4 SHA-1: db2892c36f37f74273723d985b8ca7f6e66447aa SHA-256: e8ed017aecac3b302da6c16410610364d4789b603a4ff4246267d2e54a0bd2c0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by both ML classification and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, even those marked as benign, suggests a redirection mechanism common in phishing or malware distribution schemes. No scripts were extracted, but the PDF structure itself is sufficient to warrant a high confidence assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9125

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/mHcMeCcfVl0/square?utm_term=clash+of+kings+private+server+2020
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee6931db6052518ec92c4c/1626237234287/words_that_start_with_con.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0364639c5d52effb943dc/1626355270858/93069767995.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e923fd563c1506a8b64163/1625891837287/74907031071.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e9143e92abcc18c4f57d93/1625887806788/lekivijonogesepat.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ed97b6c7772f26c85065eb/1626183607071/renegifet.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_off0000ccfb.bin
394b7b7ff992e70aa41b299e39cc5343befc2eade213cbbfbafacfae85972b69		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCFB 11068 bytes
font_01_sfnt_off0000e6c9.bin
cdcd3cf678c484dc5d528185c9ba8eda34d26f2ea7053a470bb6dbd5d8b44c1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C9 16124 bytes
font_02_sfnt_off000110be.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x110BE 16792 bytes

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