Malicious PDF — malware analysis report

Static analysis result for SHA-256 b515d7c9b383a512…

MALICIOUS

PDF

93.9 KB Created: 2021-07-13 19:02:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 9abed18a14035ff533a750acef86e023 SHA-1: 2c7cb129af2982fc3475ca4bf6886090b86e0a1e SHA-256: b515d7c9b383a512d0b3efd6395205884ab8c9f273efe88049cd74d7bbcde6e1
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. It contains an embedded URL that, while currently flagged as benign, is indicative of a phishing attempt. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of the embedded URL and the ClamAV detection strongly suggest a phishing or credential harvesting scheme.

Machine Learning

  • Nyx PDF Classifier clean score 0.1448

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/razvivatel/yapz/~3/UQ8tT55rDuk/square?utm_term=closed+lock+jaw+causes PDF link annotation
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e846b5a9c4294aacf5d42b/1625835189379/90066551561.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7ebb67d3b385c94b64c30/1625811894954/6857041148.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D7C 17336 bytes
SHA-256: e401be4fa2efc92ba9b4c35af658e9741802e61aa0e90979c3441de36b04ecdf
font_01_sfnt_off00013ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AC2 10408 bytes
SHA-256: 188468a71f7b51f803d91d6ae81f06ad1aa3bd52f3ae45cb455d2775c9adda98
font_02_sfnt_off00015294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15294 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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