Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a2ac76bc41d008…

MALICIOUS

PDF

100.4 KB Created: 2021-07-20 01:56:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3a40a57cccaca236e137233e6458a2bb SHA-1: 1be53909fd7faa22f107df1ba9ce02df3f38159a SHA-256: 30a2ac76bc41d00800a24713b7c1b716708b5bb8e54e4b63cac820d569408fa1
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 marked as benign, suggests a potential lure or redirection mechanism. The PDF structure and the authoring application (wkhtmltopdf) are common in document-based malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.1398

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/qQn0o4eTdIQ/square?utm_term=mathematical+modeling+of+physical+systems+pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f05da738786901bd9c9d27/1626365352232/besides_distinguishing_grammatical_from_ungrammatical_sentences.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_off000121c4.bin
c4ff68636d2c25b9f4594a3155f214d72ab6cbac6fdb66dee8dcbcb397489877		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121C4 19028 bytes
font_01_sfnt_off00015464.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15464 16792 bytes
font_02_sfnt_off00016c7b.bin
8cdc469273b8845604e9bd47e5af5164c01a69b4da14367b547be8921137e376		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16C7B 11072 bytes

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