Malicious PDF — malware analysis report

Static analysis result for SHA-256 e892d30cdef1623d…

MALICIOUS

PDF

65.2 KB Created: 2020-11-20 15:17:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a4c68bfb50e826e83fbb03a99bc7e8cd SHA-1: 9010b4378ea234da8bd0dd424a36e217c5e51b95 SHA-256: e892d30cdef1623da04bd8d2219894cdda0f61b16f054794bfb1583dc414665d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/123?utm_term=breaking+through+bureaucracy+michael+barzelay+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4458634/normal_5fa0df22e2ef1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375531/normal_5f9514d422a90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374366/normal_5f9d4de061769.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366047/normal_5fa6886ade6f3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a8e6cf4e-5cea-45ff-a964-2e5ca20afe3f/58182373199.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/concussion_movie_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/91631710478.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/13785171335.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/72291811613.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/llc_member_buyout_agreement.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/gelapazajoxef.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/23153144855.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/52850354630.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3B6 5676 bytes
SHA-256: ed0044d8cc50a7fbf317fe6650d35d92e9da63a3eb60ac9ac75eb6737f3f5059
font_01_sfnt_off0000c6e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E0 10016 bytes
SHA-256: be37e615c43eefa0c975055415a6cb4a809e0806a82a08c9ad8fe9c533cb26c3
font_02_sfnt_off0000e8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F1 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34