Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee4b048af260e6c…

MALICIOUS

PDF

95.7 KB Created: 2021-06-10 13:16:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f201893b57d3dc05ab1b54ed270070a3 SHA-1: 0266c92b94904900cbcf3964b2a529134c9263ba SHA-256: 0ee4b048af260e6c7ed26649eac235c9595fe413b5d7f278d87a2bcbc894eaab
156 Risk Score

Malware Insights

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

This PDF document contains a link farm hosted on compromised WordPress sites, masquerading as a download for 'Fifa 15 crack v5'. The presence of multiple URLs pointing to potentially malicious content and the ML classifier's high confidence score indicate a phishing or malware distribution attempt. The document body is heavily obfuscated, but the heuristic firings strongly suggest a malicious intent to redirect users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://chcial.ru/uplcv?utm_term=fifa+15+crack+v5 PDF link annotation
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a9ff85934---zimulekepuguwijatok.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160840b753e146---nuwipovunubetaperu.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16089e7fec4064---xaxij.pdfIn PDF document text
    • http://okmarin.ru/userfiles/file/70706135731.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/60e915210df7641b98f7449172ce8ec5/53061269208.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e1332f3b2d---14969680993.pdfIn PDF document text
    • http://xn--h49avwqct32ewe967crscpsaz7d.com/ckupload/files/jupeduzodomezitovuwiw.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/07054d2065aae3e492de7dc4ac70e44e/61130748242.pdfIn PDF document text
    • http://tgtech-auto.com/userfiles/file/vuwajiwazi.pdfIn PDF document text
    • https://healthcareadvisorsgroup.com/wp-content/plugins/super-forms/uploads/php/files/ohpnvopuekoh2u0namknd4ojk5/palepamikidurenezezulo.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607e92a435851---fupozakujenilavonogepebet.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160948fe60ccbd---wiwuzemami.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/f00cuptqvmitemifcop89gfht4/69610025922.pdfIn PDF document text
    • https://palcev.ru/userfiles/file/bewetudajopijotetunel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0001354e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1354E 4920 bytes
SHA-256: d482a4a77295029f3e7479198ade407988ab2b5a90a5e359eea7a3970e258500
font_01_sfnt_off0001463a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1463A 13472 bytes
SHA-256: d26012211dc9ecbdb1f5d1d35c570f66a1138e3c10728ce77cd1d30ff1babd4a