Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a04eda762a05e2d…

MALICIOUS

PDF

112.4 KB Created: 2021-01-24 23:52:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 84f397fb250a99a5ba24b32b0ba30c7f SHA-1: dc024615ff5873ad561f215f3128200f9af38b92 SHA-256: 5a04eda762a05e2d7563cae4d1a1bd0d6cf594be7c4b0db72fa5db3b66e5bb9d
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, with one prominent URL pointing to 'bologen.ru'. This suggests a phishing or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or distributing further malware. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://bologen.ru/123?utm_term=phil+collins+no+jacket+required+album+songs PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369646/normal_5fe0d8221ce72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450438/normal_5ff9bff9ca746.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369633/normal_5ffbafee1cf27.pdfIn PDF document text
    • https://waboralitenir.weebly.com/uploads/1/3/4/5/134504299/2013113.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425238/normal_5fc6b5b33b2e7.pdfIn PDF document text
    • https://damemerivojed.weebly.com/uploads/1/3/4/3/134378109/2c2ab231f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457861/normal_5fdb9bd8c4890.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471256/normal_5fc70fe1256a5.pdfIn PDF document text
    • https://nesajejegumexe.weebly.com/uploads/1/3/0/7/130776687/7b6f66.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427811/normal_5ff1e5d49dc7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491686/normal_5fd7d914c53c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460975/normal_5fc7fc6150677.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376088/normal_5fe27d1bea0c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414871/normal_6007226cb7fc9.pdfIn PDF document text
    • https://rajidekexosixi.weebly.com/uploads/1/3/0/7/130738830/6f1b8f6bf6726.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403131/normal_5ffb8ee389ab4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491414/normal_5fde6e0fd7722.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/sevoga/tokimunabuvirezi.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/movie_song_ringtones_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/amyloidosis_cutis_dyschromica_report_of_3_cases.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_off000176e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x176E0 5760 bytes
SHA-256: a8b3d6175df8e17dc356d0cf64442f8d0a5d938cde2399d2e0f7dca50efd6b4b
font_01_sfnt_off00018a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A48 12408 bytes
SHA-256: b334262c56ac142463d5336264eddb752911253ff7c819f53c77ccc30b9b1653

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