Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e018a73621d931a…

MALICIOUS

PDF

72.8 KB Created: 2020-11-21 23:49:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 59aa46bffb2e281e9d1bcc48967e5d57 SHA-1: 11abb0e6c6ae8f1f0038665945062b6603827557 SHA-256: 5e018a73621d931a9b87da489c0547c98c6572f1c93f8c84a322e293a84c4325
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=tecnologo+em+tecnologia+da+informa%25C3%25A7%25C3%25A3o+salario In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421217/normal_5f9b6cf56529d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409628/normal_5fb81dab197eb.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/e7b9c368-e550-49ad-b641-6789c9a82eee/xujamelava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc504c54-5f18-4925-95b8-06473adc9a75/43262423477.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/61695733614.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07a61073-61bd-43dc-9231-6d47431c3adf/puperikanonuduxasozuveva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/933aa2e9-1202-4f32-8e7e-b6f23cdbe6dd/1095952929.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/riwefudexuvudorediwu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01ed0c7d-162b-446c-85d7-e317218a43c7/3527619866.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ebf4950-b040-4db7-9d91-0de49fcb3c5b/33553895829.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/the_human_digestive_system_crossword_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/maled.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/miraduditazusexefik.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/bodyguard_netflix_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/lip_sync_battle_guidelines.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_off0000cddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDDD 5576 bytes
SHA-256: 6d8044aed890cc4048425a930d08482281bdd49a42a2f7437c246c4b6fedb0ef
font_01_sfnt_off0000dfda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDA 12536 bytes
SHA-256: c0ece8f3f15065e6c6579b2d774d075c6eb56c87cc365daf912e1ec309b37ab2
font_02_sfnt_off000105db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105DB 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333