Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf241f83fd95dca2…

MALICIOUS

PDF

75.3 KB Created: 2021-07-17 02:07:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: dd91d09e1164ea91ac7938dff1685808 SHA-1: fbc91cf013089486d46e0d4beeeef24b4e2f7e0b SHA-256: bf241f83fd95dca2f957260c80699c86fd1ed628e1073a06de5f2384e30f74ac
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URIs that point to external resources, as indicated by the PDF_URI heuristic. While some URLs are marked as benign, the presence of these links suggests an attempt to redirect the user to potentially malicious sites. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a phishing or malicious intent. No scripts were extracted, limiting the analysis of specific execution methods.

Machine Learning

  • Nyx PDF Classifier clean score 0.2489

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/-MXWpcYQ7kA/square?utm_term=and+it+is+not+your+fault+but+mine PDF link annotation
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e848b868d8d74fdbbcc118/1625835704742/20912587524.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ede84f4c056a31b81c4119/1626204239099/download_procreate_on_android.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_off0000c609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC609 10852 bytes
SHA-256: 6638c76026c2967bc71243333538c170cc7cf21674bfa66aac7dbe18a5004e74
font_01_sfnt_off0000df22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF22 16332 bytes
SHA-256: 927729dd75bdf16c176ec0a3a36274b7ebbfbb4ca87ef7aaf97e9ddd4317b034
font_02_sfnt_off00010949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10949 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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