Malicious PDF — malware analysis report

Static analysis result for SHA-256 f30c69c3de76ec41…

MALICIOUS

PDF

59.4 KB Created: 2020-11-16 21:14:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 05f41a02e70b9cabc7caa9908839c66e SHA-1: d2ece3e950aaa174220c440e631375e2b10f7012 SHA-256: f30c69c3de76ec411b479008c22b42aa549c43fbf9dd23ebc511b75c121c3087
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/123?utm_term=bullseye+bbq+sauce+near+me PDF link annotation
    • https://vamepuruzaf.weebly.com/uploads/1/3/4/3/134352512/3110237.pdfIn PDF document text
    • https://jonowukamox.weebly.com/uploads/1/3/4/3/134372820/pimolumoladojix-bomiparewovek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5fab9b7325235.pdfIn PDF document text
    • https://lorinifufa.weebly.com/uploads/1/3/4/3/134357706/wusudamex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491925/normal_5fb28852f367d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372735/normal_5f94890ce9915.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463300/normal_5fb259195f9f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411483/normal_5f9717d1ba08d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383322/normal_5f9b71ff2f715.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/velowo_dakemolaku.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/rovotafavap/kegenopagomidiruz.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/75039665906.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/zefuxamuvoge.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_off0000aa90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA90 5360 bytes
SHA-256: 20deeacfb99ec1c27ca9c989979c17774ea31301771a0a56ff41fa54a966d9da
font_01_sfnt_off0000bcc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC1 10236 bytes
SHA-256: 853d7a78049739eed53de9fbe5ca9a5bf2dfbf6287b354ca129e7d48241a0b7a

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