Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b5ce70c7f54f2fc…

MALICIOUS

PDF

76.6 KB Created: 2021-01-20 19:10:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 96817b978bb8d64ff7b1788600f023ab SHA-1: ec1e87cc692a0dd7a571f991fd1168f24f644c1a SHA-256: 3b5ce70c7f54f2fc5851f2410c7404da0153721f9ac41f108183e62efe96f8f2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further support the malicious nature of the file. While no scripts were explicitly extracted, the PDF structure and embedded URL suggest an attempt to lure the user to a malicious site.

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/123?utm_term=ada+2020+algorithm In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386089/normal_5f8d80988191f.pdfIn PDF document text
    • https://mamufitixiru.weebly.com/uploads/1/3/4/6/134640278/1501941.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/hdsiihh/world_war_two_quizlet.pdfIn PDF document text
    • https://cdn.sqhk.co/jelivapizivo/OijAngd/55459983753.pdfIn PDF document text
    • http://dazixetenulega.22web.org/golden_frieza_dokkan_event_guide.pdfIn PDF document text
    • https://jokasagumejede.weebly.com/uploads/1/3/1/0/131070006/tomisazalovep_jeparufaginolop_fupefo_fobomuv.pdfIn PDF document text
    • https://boxenujevodaziw.weebly.com/uploads/1/3/1/0/131070305/fofavoragul.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/woneketelak/24528199060.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/climate_central_research_report.pdfIn PDF document text
    • http://fosufozixa.rf.gd/49288654946.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/jajoxawafabul.pdfIn PDF document text
    • http://kofujuluzode.epizy.com/tenipepobakitedadonivum.pdfIn PDF document text
    • http://lisunamubeso.epizy.com/inspiring_quotes_images.pdfIn PDF document text
    • http://tezipibuboxigo.epizy.com/how_s_it_going_answer_funny.pdfIn PDF document text
    • http://mojabumenir.epizy.com/nijixirosiwepuwa.pdfIn PDF document text
    • http://fonobufusig.rf.gd/59956934139.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/bleach_brave_souls_apk_obb.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_off0000e997.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE997 5324 bytes
SHA-256: 8e679f9542a1630d404d9514d10ebe79a9cd72228c55bea65cdb53a25e45a8f7
font_01_sfnt_off0000fb81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB81 13180 bytes
SHA-256: 0d1a9752c00c4129fb11fb2e90d588f58da316abc64f54b8126cecb3ab0c1648

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