Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7b804c69a4bfbd1…

MALICIOUS

PDF

287.0 KB Created: 2020-11-13 19:12:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ebe0333a38b16b89f1a99fff9825fcc9 SHA-1: db1acf7735509f08beb4fcf3187d8902768b245c SHA-256: c7b804c69a4bfbd115e9c785d557776ee20a930516cb8f8ff93be27518d5652a
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 0.9667

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://traffset.ru/123?utm_term=zyra+mid+runes+and+build PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384460/normal_5f9d66dc8e4d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370267/normal_5f8d362a4360a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388280/normal_5fa84f37ccde3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375885/normal_5f8c915a8f9e8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/67924424-3e04-4007-a481-6871bbcad9e1/50546071482.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/periodic_table_chemistry_puns_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/77552307505.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/483f9165-e155-4102-9431-6aba9686d186/tidijomiruxisoke.pdfIn PDF document text
    • https://s3.amazonaws.com/mupakijivuruzim/poduwuxujasonigusebumeda.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/two_brothers_by_leo_tolstoy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f686f194-087e-4542-97be-ca4887f103a4/global_street_design_guide_bloomberg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fcf2f90-66eb-487e-bb86-80c7c45de1d8/55950173335.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/hmh_social_studies_workbook_answers.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00043568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43568 5172 bytes
SHA-256: 925d88395a4e600a557bc1064dee2fd631155a238c2c2653f82e9056f58263f5
font_01_sfnt_off000446eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x446EB 11044 bytes
SHA-256: 3547e1954015d2ba32ffe336d289435b19c8a3a4f8530bd05b89eb45d26c47b7