Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fa2e0a3e0e28533…

MALICIOUS

PDF

70.5 KB Created: 2020-11-29 07:45:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 695c979000abcba88a10aad61b70b2b9 SHA-1: 2f207befae62b251207357e98fdb5663b5b47535 SHA-256: 2fa2e0a3e0e285330bcae2fc5131077bed2fa0c100c9d7f43d621a34720fd483
154 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 routes users through malicious redirector infrastructure. 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/123?utm_term=where+is+the+m+in+dusty In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375077/normal_5f8d3cdc71df2.pdfIn PDF document text
    • https://febixitojujemo.weebly.com/uploads/1/3/4/4/134402622/bixumarolaj.pdfIn PDF document text
    • https://dapekedes.weebly.com/uploads/1/3/4/6/134643928/6542291.pdfIn PDF document text
    • https://vixepakezo.weebly.com/uploads/1/3/4/4/134447938/2774795.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425726/normal_5fb61f9ccaf74.pdfIn PDF document text
    • https://voziguwotameba.weebly.com/uploads/1/3/4/3/134345279/237228.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5fa5bf1bb5e09.pdfIn PDF document text
    • https://kixatefibav.weebly.com/uploads/1/3/0/7/130776592/wemugov.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/jidagafinuxesu/decking_sheet_concrete.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/volvo_construction_equipment_ab_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/toronto_fun_guide_registration_dates_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/calf_tear_rehabilitation.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/tikagiridimoxefed.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/bahubali_1_hd_movie_tamilyogi.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/wizard_of_oz_movie_worksheets.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_off0000cbe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE6 4712 bytes
SHA-256: 85175e9b61107f1a85ea7663b123f19b5eb48567ee3e72db26ba44f443fbecdf
font_01_sfnt_off0000dbbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBD 10352 bytes
SHA-256: 6d7d1cf593bcde554f4745f32f5515d1708382abb6dba47eda14997b184b2c06
font_02_sfnt_off0000ff2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF2B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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