Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f438c10162d5b4…

MALICIOUS

PDF

69.5 KB Created: 2020-11-24 10:58:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 46e71fbcdb4679e33f60a5b6078fd4fc SHA-1: 59ba626584bcf8f297fbe2e8530f915bf0f2feee SHA-256: 06f438c10162d5b4075eea479dfd803ecb420f84d885908c8796d3794798d9ff
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO spam or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.Trojan'. The embedded URLs suggest an attempt to drive traffic to potentially harmful content or phishing pages.

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://traffnew.ru/123?utm_term=skyrim+ps4+load+order+reddit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420765/normal_5fa3da1f39cb0.pdfIn PDF document text
    • https://dekekutema.weebly.com/uploads/1/3/4/4/134440935/f037d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391898/normal_5fa95a5d8f9c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381297/normal_5fba97811150c.pdfIn PDF document text
    • https://gonoloxezejuje.weebly.com/uploads/1/3/1/4/131410007/1068303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491969/normal_5fb7242465804.pdfIn PDF document text
    • https://divuvefa.weebly.com/uploads/1/3/4/7/134759037/mijefegurewoki_kedebepewesifem_xivejumupe_lorokexosefix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384142/normal_5f9622af11913.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416790/normal_5fb7285c274e7.pdfIn PDF document text
    • https://sagerogokijisoj.weebly.com/uploads/1/3/4/6/134601402/gogojozepina_kilaxelu.pdfIn PDF document text
    • https://pafuzoxim.weebly.com/uploads/1/3/4/5/134585506/bisij.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/sukobogixe/40550611469.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/an_american_childhood_annie_dillard.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/10892357283.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/simple_biodata_template_word_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/17194044768.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_off0000d262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD262 5464 bytes
SHA-256: 376fcafb67957f06c0636151d956d603f9e9724a945608444a6e64f29be55e34
font_01_sfnt_off0000e4ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4ED 10692 bytes
SHA-256: af825a53559a0c53df7ec7086a2471dbc0f6c3a4677f0518e0c6b7d663a72fff

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