Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d6ca46ba4c1122…

MALICIOUS

PDF

71.7 KB Created: 2021-07-16 19:31:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b8728a8f8faa378643da93e663c081a1 SHA-1: a77c0cc56b61fa456f091c451725ac2995efbf39 SHA-256: 30d6ca46ba4c11229ca548023f26fb0b45f08b61f604c510afc746539d1b3081
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. It contains embedded URLs that point to external resources, although these specific URLs were flagged as benign. The PDF structure and heuristic firings suggest it's designed to redirect users, potentially to a phishing site or to download further malicious content. No scripts were extracted, but the presence of external URIs indicates an attempt to lead the user away from the document.

Machine Learning

  • Nyx PDF Classifier clean score 0.1902

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/iYdez4bKglI/square?utm_term=how+to+answer+for+expected+salary+in+an+interview
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f00ef40d8d0805bdb5f289/1626345204112/clash_of_lights_10_download.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_off0000ba44.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA44 16792 bytes
font_01_sfnt_off0000d256.bin
cae7997966ffbe996ee7359305b6eb97feee398a9600e59e2b3cfb1480cea4b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD256 15368 bytes
font_02_sfnt_off0000f964.bin
5102229018d92b4000c1c850a57935b3da8a259e5fe92937b58264e30fff8d4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF964 10972 bytes

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