Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2e8d5a103264b4f…

MALICIOUS

PDF

74.5 KB Created: 2021-07-18 01:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b69cf4b723453080c32835f14f3a012e SHA-1: 5fa97832a561c548f6d27bf1d3feeda1417ee878 SHA-256: a2e8d5a103264b4f0c8751e25c8371fd8231e8c2e4386e7b9a3746d1938537fd
66 Risk Score

Malware Insights

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

The file was detected by ClamAV as a phishing trojan, indicating malicious intent. The presence of embedded URLs, though currently flagged as benign, suggests a potential delivery mechanism for further malicious content. The PDF structure itself shows signs of manipulation, with duplicate object bodies, further supporting the malicious classification.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2592

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/qI_NY8u86tA/square?utm_term=this+time+lyrics+a+boogie
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f2a36729712869f05ee2fa/1626514279143/xukofefowalavedipobiguwa.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f2c03236db646251996a90/1626521650636/dulc_holiday_cabins.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_off0000c19c.bin
b73de315bc10811d94457319f2c690e9d4f98508504dcb7f1e6b2dde7cf0efe5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC19C 16728 bytes
font_01_sfnt_off0000ed53.bin
ed63ab2a38dfc57380e2763947bf7042c0bf7d824628a4a4f6837b2f1dfdb076		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED53 10788 bytes
font_02_sfnt_off0001063c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1063C 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.