Malicious PDF — malware analysis report

Static analysis result for SHA-256 72a80f17f93be71e…

MALICIOUS

PDF

77.8 KB Created: 2021-07-12 22:09:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 42a5882d2e8cd1f0ca800ed0d02f8e3c SHA-1: 8b6c040f8ba43fc6a5e9ae5238a9eb58711658f9 SHA-256: 72a80f17f93be71e131236d8f2c99d36e9446dc6ad7f0fad837c250027fc94ef
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The PDF contains embedded URLs that likely lead to malicious content or further stages of an attack. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to exploit vulnerabilities or trick the user into navigating to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/cEZ-xJcQpFE/square?utm_term=scratchy+throat+allergies
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7d683a853d606aebcf17/1626111336071/wokojofapelejalot.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e918bb787dde1a90adb917/1625888955599/most_expensive_cruise_ship_suite.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e95870e6a58043b6933b82/1625905264672/23715555939.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e910a2c0906550d90a960d/1625886883114/sajafalatesabed.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e94f192dabf2723555ca4f/1625902873920/xujarubajasopunetil.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8e4bf83a7f26ecd16265/1626115659268/36902760043.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec7899fd54eb070824ab74/1626110105344/preposition_for_days.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e7c5437d3b385c94b49426/1625802051299/sokeximuxevolabutiganobil.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec77c05f604029b990400f/1626109888957/dubozowogivexusixetal.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8c3146955380ad9e6d925/1625867028870/water_resources_engineering_notes.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_off0000d1cb.bin
990beb6cecc8d84dd2842103abff4bec086d2d96fed1f32eebdebd18b09cf137
pdf-font-stream PDF embedded font (sfnt) at offset 0xD1CB 10592 bytes
font_01_sfnt_off0000ea1d.bin
48d7c05a60e844d2c279e34fc7cdd4acb1fa375913f9b54f69d3b6de326b90cb
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1D 15832 bytes
font_02_sfnt_off000112fb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x112FB 16792 bytes