Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed04021a64cacc24…

MALICIOUS

PDF

70.8 KB Created: 2021-02-21 06:46:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3fe956bef3bf75202e952f9f8a2ce498 SHA-1: 23dfa3af731bc71eb6e305b8835262efdf72c72d SHA-256: ed04021a64cacc24f1281b0840485d8c3d24aeb0e75c5bfee00d8b7f9a0b3e37
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://jottigo.ru/123?utm_term=how+to+build+a+box+wedge+log+splitter PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4468819/normal_602037e5cd368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460447/normal_5fd760597d480.pdfIn PDF document text
    • https://cdn.sqhk.co/sofetarunox/g1geqrO/neon_orange_nike_running_shoes.pdfIn PDF document text
    • https://cdn.sqhk.co/ferobisuw/g8jfgdG/fill_out_online_adobe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386605/normal_5ff4925738c0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369651/normal_5fd6378c35d6d.pdfIn PDF document text
    • https://cdn.sqhk.co/gisusisabez/dhjhjV8/13090595398.pdfIn PDF document text
    • https://cdn.sqhk.co/dufelogaruf/gjgzgcS/loxewexotu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450864/normal_5fcf18c2ee93b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468268/normal_5fd9f6dc4d672.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366327/normal_601ede0556f45.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://s3.amazonaws.com/zalomi/merizakarizimo.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/camila_cabello_shawn_mendes_performance_vmas.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/26558418555.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/practice_absolute_value_functions_worksheet.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_off0000cc39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC39 5164 bytes
SHA-256: 1e2d719945e425fbefd6bac37f263b157629b86e0421b9632c6187b4b8b0767f
font_01_sfnt_off0000ddef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEF 10020 bytes
SHA-256: 399ff0ced7d3766226f6b9f955fd83035a9093cfdb9ae332c129782e584bfecd
font_02_sfnt_off00010053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10053 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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