Malicious PDF — malware analysis report

Static analysis result for SHA-256 59998afbc474bed0…

MALICIOUS

PDF

83.6 KB Created: 2021-09-14 13:43:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: c252f87ae8010ea7e67a450cd58c5737 SHA-1: 4e573afd2f78dc3bc5475a12c81f51495eacec89 SHA-256: 59998afbc474bed02d6dfec4801fedaf91ad115adacc04ecb78ac72cb1dc1796
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded JavaScript suggests an attempt to execute code, likely to redirect the user to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 6

  • 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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://nutrishop.in/ci/userfiles/files/19713780274.pdf In PDF document text
    • http://garage-ys.info/js/upload/files/5445009143.pdfIn PDF document text
    • http://sakesushilakehavasu.com/uploads/files/gokixirebazegupu.pdfIn PDF document text
    • http://smflow.in/admin/uploads/file/panutavuwezoxoliduwituxo.pdfIn PDF document text
    • http://ibshop.gr/uploads/_uploads/files/roxifidil.pdfIn PDF document text
    • http://gccde.com/downloads/blog/geust/files/jusexuxerixapegexaz.pdfIn PDF document text
    • http://rosabaum.de/web/editor/files/83890578984.pdfIn PDF document text
    • http://vitalchurchesinstitute.com/files/file/bugupokagudaxugobazapa.pdfIn PDF document text
    • http://zhongjiukeji.com/upload_fck/file/2021-9-3/20210903103209744064.pdfIn PDF document text
    • http://beachfirebrands.com/userfiles/file/kafifu.pdfIn PDF document text
    • http://orthopaede4you.de/userfiles/file/41177881949.pdfIn PDF document text
    • http://dnepropress.net/files/file/fobepar.pdfIn PDF document text
    • http://greenhere.cn/upload/ckimg/files/202109010631474899.pdfIn PDF document text
    • https://fainitelecommunication.com/public/editorfiles/file/balezu.pdfIn PDF document text
    • https://memorybg.net/app/templates/js/ckfinder/userfiles/files/63239140543.pdfIn PDF document text
    • http://sheilahancock.net/blogfck/file/72062079848.pdfIn PDF document text
    • http://faradtvandor.hu/picture/userfiles/file/mabitezigewigedawafesebab.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16133976c9110d---25152012580.pdfIn PDF document text
    • http://carscaso.com/js/upload/files/63772053869.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/161336cd29ba40---porawodo.pdfIn PDF document text
    • https://jurad.eu/files/file/kabuz.pdfIn PDF document text
    • https://ibextrail.com/editor-images/muxidaxorotetid.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=the+croods+2+full+movie+watch+online+with+english+subtitlesPDF link annotation
    • https://lapdonline.org/file/8996818724.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE15 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f62c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF62C 11396 bytes
SHA-256: 14e5a8f10af67b9865a50d968d1f55fab1e09e9e3547718284de419549c2901a
font_02_sfnt_off000110cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110CB 18188 bytes
SHA-256: bff59dcf79678162a722d03bac52043ce884a974126f56faa2e7064c8119491b

Open this report in the interactive analyzer, or submit your own file for analysis.