Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee9e10da0afdc4d6…

MALICIOUS

PDF

69.6 KB Created: 2021-02-05 05:28:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d037778b0cfa5aaa737d372db698e8fc SHA-1: dc010efeecf5d64edd57141d7e557510416fffa1 SHA-256: ee9e10da0afdc4d6cffe739ad74f0c72090bf7c75e129a3506a5e8118d3d5c76
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. It contains external URIs and is part of a link farm hosted on disposable domains, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful content.

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 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://bologen.ru/aws?utm_term=decompensated+heart+failure+guidelines+2017 PDF link annotation
    • http://piwifeg.22web.org/sacramento_county_jury_duty_reporting.pdfIn PDF document text
    • https://jekodijup.weebly.com/uploads/1/3/4/4/134490718/3569543.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382208/normal_5ffa73be4aa8e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410002/normal_60048d059a03c.pdfIn PDF document text
    • https://verijijul.weebly.com/uploads/1/3/4/8/134861220/3cc6f27931ebc6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365621/normal_5fed6fba1f9ed.pdfIn PDF document text
    • https://bafexobis.weebly.com/uploads/1/3/4/0/134041027/5352324.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376374/normal_60127c2028a92.pdfIn PDF document text
    • https://gawozigojuvapa.weebly.com/uploads/1/3/4/8/134896601/2986463.pdfIn PDF document text
    • https://lepamatizetu.weebly.com/uploads/1/3/0/7/130739269/vosazo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://demunoj.epizy.com/75959513174.pdfIn PDF document text
    • https://s3.amazonaws.com/jotogorurekuro/how_to_annotate_in_evernote.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_off0000d1c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C4 5972 bytes
SHA-256: 5ca0d34697ad9e32931ca29b313f7e4ef03e95ebba8ab349b48e30fc34428ba2
font_01_sfnt_off0000e5ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5FF 10404 bytes
SHA-256: 8efc155fe3ac4d692c30d206cd72906337a8ca3120cd09c3bd230edf49654bfc

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