Malicious PDF — malware analysis report

Static analysis result for SHA-256 69972e497514e755…

MALICIOUS

PDF

69.5 KB Created: 2021-05-19 08:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 28ab874fe0bfa224b1e64fe6da87a186 SHA-1: 8c0fa5a6732092da2eb8aabe7b25b1877c778679 SHA-256: 69972e497514e755370d757cde69b8aeb65b7131ab11d5c20699bf8eed26c970
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The presence of a large number of external links, specifically identified as a 'PDF_SEO_LINK_FARM', suggests an attempt to redirect users to potentially malicious or phishing websites. While no scripts were explicitly extracted, the nature of the PDF and its embedded links strongly indicate a phishing or malicious redirection campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/strik?utm_term=pyar+deewana+hota+hai+mastana+hota+hai PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401540/normal_603802137a17c.pdfIn PDF document text
    • https://vibovetegaj.weebly.com/uploads/1/3/4/6/134695113/bubuluwivudikab_rogudodaseligek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460690/normal_5fcea67324a48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403262/normal_606b092f222ee.pdfIn PDF document text
    • https://gugukufetufa.weebly.com/uploads/1/3/4/3/134337187/6155691.pdfIn PDF document text
    • https://ninisajata.weebly.com/uploads/1/3/4/8/134869212/rekofimud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478408/normal_5ff319f9024e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378406/normal_5fd2832544ade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447487/normal_605714fa5b6ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375071/normal_5ff9ab517c4ec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404293/normal_5febb51f5c28b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427501/normal_60262a353acfe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458428/normal_601146c7bbf9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477913/normal_5fdab86818e42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420240/normal_604e322471a2a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443610/normal_5fe10fe307150.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382974/normal_60582c07da127.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8fbde86-26d8-4280-9553-83b853c598a2/nuance_viewer_plus_se_application.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b0957a1-3f31-417a-9566-60e43b59ed8b/13800854838.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_off0000d2ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2EC 5228 bytes
SHA-256: 5d0ac311cdf8094457c941d4cb3b3ea716e7a87a1743f8264493fd28362d1154
font_01_sfnt_off0000e49f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49F 10528 bytes
SHA-256: d1bd889de077fa8c4a4534763db3386c0d1a26c6262bf0a2d0250ed14a51838b

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