Malicious PDF — malware analysis report

Static analysis result for SHA-256 edae3e9f2824363e…

MALICIOUS

PDF

77.8 KB Created: 2021-02-27 14:35:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 852c6de58ed7856fcb3c6201bf13609e SHA-1: 9e8c1fc86f20f8a05c8bd004781ba97921e1bdf8 SHA-256: edae3e9f2824363e85ca1aa1beca4edcd3ec51fdabeca53955c2bd13029b6bf0
66 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or redirection service. The ML classifier strongly flagged this PDF as malicious. The presence of external URIs and the nature of the embedded URLs indicate an attempt to direct the user to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/wix?keyword=omaha+whitepages+addresses PDF link annotation
    • https://zotekuruwufuk.weebly.com/uploads/1/3/4/1/134108654/foxot_dumadiwunopu_fekumunukor_potonisekowom.pdfIn PDF document text
    • http://gekifek.scienceontheweb.net/97108476013.pdfIn PDF document text
    • http://daating19.site/24296084737b2b7w.pdfIn PDF document text
    • https://tebeneka.weebly.com/uploads/1/3/0/8/130874559/nawako.pdfIn PDF document text
    • http://tonozezoziw.iblogger.org/barixawanivopanexi.pdfIn PDF document text
    • http://wejnpowk.space/gakifalili5hq0.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/adidas_watches_price.pdfIn PDF document text
    • http://gajaxujifusokul.mygamesonline.org/how_to_reset_acer_aspire_one_cloudbook_14_to_factory_settings.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493266/normal_6024f0727ab60.pdfIn PDF document text
    • http://mililasapatiw.22web.org/21_pilots_blurryface_album.pdfIn PDF document text
    • https://legaxebojidonet.weebly.com/uploads/1/3/0/7/130775342/kawawetitimigodi.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/pavujiniz/delivery_receipt_template_excel_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/levavosil.pdfIn PDF document text
    • http://lofupiwosilabo.epizy.com/36955484731.pdfIn PDF document text
    • http://livukizaxavubip.rf.gd/lilefozonuvobovokodibipi.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/103_amendments_in_indian_constitution.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_off0000f34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34B 5460 bytes
SHA-256: 648c5425ee8dfa62798626ac73ec2f9fa73a1802eae0474f4e49f715a9449710
font_01_sfnt_off000105bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105BF 10592 bytes
SHA-256: db679919bf8e2c46fa80841a2009b176d62f4cf1b8e1e581c07017a5eb908e11

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