Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d5e8465a91a31a…

MALICIOUS

PDF

73.8 KB Created: 2021-07-12 21:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ae21ae53d42d8d2feb7df3417afdb04c SHA-1: 59a32077665ab14c517def7c4db655c4755cd504 SHA-256: 89d5e8465a91a31abd1265778e489acf4a7f2b9eeffdaadaca49739cb64e9590
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and also by an ML classifier. It contains embedded URLs, one of which is a Google feedproxy URL, suggesting a potential phishing or redirection attempt. While no scripts were explicitly extracted, the PDF structure and detection indicate malicious intent, likely related to delivering malicious content or phishing for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7882

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/y83TWYo-3DA/square?utm_term=olivia+meaning+in+spanish
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8b08ad4a1a22a3e8357e/1626114824654/vepalivadinabut.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e9265337cb9044756027fc/1625892435889/34337884765.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e929680cbdad4d35061f96/1625893224878/a_song_of_kabir_translated_by_tagore_summary.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e91a7b37da2614570de45a/1625889403395/vubofabivudorizonilaji.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_off0000bfa1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA1 16792 bytes
font_01_sfnt_off0000d7b8.bin
2d1b09e6eada020177b0f4c8a5e86dad0424714365946f8ff1ffa30d4f310a6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B8 10472 bytes
font_02_sfnt_off0000ef56.bin
445d2b1bcc26523d34a67120894dd2877c5a725a71384581cc1feb8e76ddcb2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF56 16984 bytes

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