Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ead326af8923ef1…

MALICIOUS

PDF

74.1 KB Created: 2021-07-14 00:12:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c54c8adaee23874a72b1029ce299c7a5 SHA-1: bc091abe20bbc4102224ad1da0be47359cd01224 SHA-256: 6ead326af8923ef188fc14f96b39c44feebf398f656a1a85f9c1ae060ef9e0d7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing attempt. The embedded URLs, although some are marked as benign, suggest an attempt to redirect the user to malicious content. No scripts were extracted, but the presence of external URIs points towards a potential download or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7218

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/eoPDrVzwpx0/square?utm_term=pert+cpm+for+building+construction
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e94f088ce0e10532d40702/1625902856964/the_society_for_collegiate_leadership_and_achievement.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e77e526b28f35f2fe5059f/1625783890438/15647330222.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60eda3d4eb7cc826ddc63dbf/1626186708662/80569454745.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e83456efb14d11221528a4/1625830486702/venexisejoladufenoradi.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_off0000c037.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC037 16792 bytes
font_01_sfnt_off0000d84e.bin
d1fa884e161b74e496f5fcea9bfa7a96cee4b8ead82349d4a5490208765beca5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD84E 11040 bytes
font_02_sfnt_off0000f183.bin
45f97e56839680444b9a99f0fccebdd7f273cf02a4ae7a40c1f5cb91e125a6bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF183 16580 bytes

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