Malicious PDF — malware analysis report

Static analysis result for SHA-256 1589f7576be39cb9…

MALICIOUS

PDF

59.9 KB Created: 2020-12-21 12:28:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 24ab13b1b227d90f4dfe4d61cfb23884 SHA-1: bd5c08ac2ae56780f55ad846bd8634c6dac9b40f SHA-256: 1589f7576be39cb9028d137dca1a28fd8d043bfd17cc1506aceecf9a80315007
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 0.9996

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://gettraff.ru/strik?utm_term=snowball+club+crans-+montana In PDF document text
    • https://marizezibafive.weebly.com/uploads/1/3/4/8/134865590/dinav.pdfIn PDF document text
    • https://tokuniti.weebly.com/uploads/1/3/4/3/134331772/737319.pdfIn PDF document text
    • https://nifufoji.weebly.com/uploads/1/3/4/4/134458522/bf49e3d8c895c42.pdfIn PDF document text
    • https://jegupifak.weebly.com/uploads/1/3/4/0/134018348/0ad88a799.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/jadere/antenatal_psychosocial_health_assessment_form.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf2cc74d27a447098b2043/t/5fd1983487bef85997e95ea6/1607571508997/todejavijupu.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/pathoma_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/alala_alala_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08956168-6ff6-41f4-9b86-7b4de53a1803/tegomizowawuvu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51e66c14dfd36fe0cdc92/t/5fca00906a94db17e495ca9e/1607073936938/3936020253.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/26250146439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4719afca-4aba-4f54-9cfc-62c8cdb1fb6a/50236496647.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79e3dc39fde0238aaf1fa/t/5fcb393bbce7087d1ad9e235/1607153979537/warlings_mod_apk_new_version.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_off0000af6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF6A 5312 bytes
SHA-256: 20c9f8070acad0f40786535525efa9932134160cdb04bb0026ead6465e598c91
font_01_sfnt_off0000c177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC177 9772 bytes
SHA-256: 464bd86db56b978ea18799c352903a396edd5a5650d0ae26f83d1c0a6aa8231b

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