Malicious PDF — malware analysis report

Static analysis result for SHA-256 785ab4267ae9f1c2…

MALICIOUS

PDF

62.6 KB Created: 2020-11-22 07:44:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: bab2664b97340c94859fb79c8dc8740d SHA-1: 294d686a4c287ce65f88bcfaf50bca001c0c0635 SHA-256: 785ab4267ae9f1c23f1ad739a9725671b2976e7e8eed41b430b05db7183c216b
154 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 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://traffmen.ru/123?utm_term=don%2527t+speak+guitar+tab+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4470017/normal_5fa4e7e42d5be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381738/normal_5fb29d72ae85d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383327/normal_5f9df6b046ab8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478655/normal_5fae956bd4119.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381287/normal_5f8f9222387dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/play_super_mario_flash_games.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/lenotipule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86aa863a-b2be-455c-b326-d747e05bcfe4/28796693400.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/7201562454.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/35675741678.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f73a9a57-8c7b-4863-a325-fb760432e07b/65089066302.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/consolidation_report_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/dogolafadufegiru.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/bruce_lee_2_movie_tamil_dubbed.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_off0000b6f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6F2 5416 bytes
SHA-256: 07d079de69d16427121759e37be5ea6f620e08b8c5e11e03cefc2fca23af1780
font_01_sfnt_off0000c977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC977 10944 bytes
SHA-256: 668976dd7eef7f3d0b8b11f08846414da6e31b3b46f057127dadc91ed4f13b4f