Malicious PDF — malware analysis report

Static analysis result for SHA-256 417ba7333bb562bb…

MALICIOUS

PDF

74.8 KB Created: 2021-02-15 17:16:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 075b2e63c50f87d6be33507dd3324e19 SHA-1: a1b8fb24970e5d14b2880cf3bbcf23af5fdbeb8b SHA-256: 417ba7333bb562bbc7612f4c027028487f2171e0b78250e5f9e71e089e820579
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a search result for a religious topic, likely to trick users into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of PDF_URI and EMBEDDED_URL heuristics further supports the attack pattern of luring users to a malicious site.

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://maypoin.ru/strik?utm_term=what+are+the+7+deadly+sins+in+islam PDF link annotation
    • https://cdn.sqhk.co/rapovebakeb/jiiaDZZ/tikedofit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367668/normal_60255e4c6415e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424036/normal_6006ee5aa363c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368494/normal_5fde1f28d6b5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450041/normal_5fe0d4f722fbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414847/normal_60241a23648a1.pdfIn PDF document text
    • https://cdn.sqhk.co/dazulegug/W6hbjeF/28262529723.pdfIn PDF document text
    • http://majubavilusuda.iblogger.org/85594421285.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482018/normal_5ff4a0ced884b.pdfIn PDF document text
    • https://cdn.sqhk.co/kufagilan/aTQhfqh/rank_of_a_matrix_in_row_echelon_form.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426072/normal_6029712c49579.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rejufamux.epizy.com/50920351284.pdfIn PDF document text
    • http://furofazitogo.epizy.com/murowogadesawidamixebuk.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/clear_browser_cache_android_chrome.pdfIn PDF document text
    • http://poxizigifami.epizy.com/tatiwapasomesuxas.pdfIn PDF document text
    • http://jemexugovi.rf.gd/borderlands_2_mechromancer_gear_guide.pdfIn PDF document text
    • http://sojoramuf.epizy.com/rexozobefapuwulovuba.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_off0000e6b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B1 5260 bytes
SHA-256: 711471f5846eb7b0e6079054376458144f6701665181f3e5f5b54e9afebf11da
font_01_sfnt_off0000f881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF881 11008 bytes
SHA-256: f7ce1dd60bfb69c8cc476daba027ca450e5a0f0a8783dfb5426ff5faaaa70a80

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