Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1dce06e0186d619…

MALICIOUS

PDF

66.1 KB Created: 2021-02-15 12:27:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ac953a4457ffbb0bc631b4580280208b SHA-1: 927498fc729dc8c015306d2e699e9d2a42e0d4e5 SHA-256: d1dce06e0186d6190c2f432957b9b030fc0b81e2e967266785f66cfe4212d814
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one specifically targeting a search query related to programming garage door openers, suggesting a lure for phishing or a scam. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and extensive link farm are indicative of malicious activity, likely aiming to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/strik?utm_term=how+to+program+chamberlain+garage+door+opener+remote PDF link annotation
    • http://nemurirewokow.iblogger.org/canon_ipf670_parts_manual.pdfIn PDF document text
    • https://fafotarume.weebly.com/uploads/1/3/1/0/131069904/9800998.pdfIn PDF document text
    • https://weritesi.weebly.com/uploads/1/3/5/3/135314652/vetalemu.pdfIn PDF document text
    • https://welavomuwaj.weebly.com/uploads/1/3/4/6/134633166/bd581.pdfIn PDF document text
    • https://biwomewiwuxe.weebly.com/uploads/1/3/4/1/134131409/zavila.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453540/normal_600a3ac868c4b.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/vaxebisapesi/kofibirumobonitolila.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/xafawelegixetegaxupulegu.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/spokane_county_superior_court_clerk_indexing_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/89078450398.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/11923889246.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/jured.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/mivexomuj.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/30622541456.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/frying_pan_river_fishing_report_orvis.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_off0000c744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC744 5500 bytes
SHA-256: 3523c9812b9f71a36af81638d668c5879639f56ccdb101e5da18f39d335df59a
font_01_sfnt_off0000d9d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D8 9792 bytes
SHA-256: 2165febc2ae2d01296fcd552d70bae2adf9db7c77d11c26c4e8183a9b7f88b98

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