Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec0d647cd6aaf314…

MALICIOUS

PDF

80.8 KB Created: 2021-01-02 11:53:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: f35dfd8c598c9ff53708b25f85dfb7ee SHA-1: 28ebef739c683d85ba165a5f91c331c8bbbaecbf SHA-256: ec0d647cd6aaf3148a139342a69d37e0900a8739a882e0b21777fc3f5b861231
162 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains a link to known malicious redirector infrastructure, suggesting it's part of a phishing or malware distribution campaign. The 'SE_INVOICE_LURE' heuristic further supports that the document's content is designed to trick the user into clicking the malicious link.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://ggtraff.ru/aws?utm_term=best+platform+bed+frame+with+headboard In PDF document text
    • https://cdn-cms.f-static.net/uploads/4502698/normal_5fd355e87901c.pdfIn PDF document text
    • https://cdn.sqhk.co/devurekon/rBlgcsX/taxekizupogopinotivi.pdfIn PDF document text
    • https://cdn.sqhk.co/xezojutatow/d1Afgcb/70287871333.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385436/normal_5fd941f790c2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424349/normal_5fefbd647c59d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f92757e4261e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485156/normal_5fd83eb2b8619.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/fosagoba/6834010711.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/faroveb.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/animal_habitats_worksheet_ks1.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_off0000fe83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE83 5560 bytes
SHA-256: 5c2899e0d55224e53a2cd3fcae9e441b6ab04612b1166ca1f7c1159068479f39
font_01_sfnt_off00011150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11150 10936 bytes
SHA-256: 59874f9fc3cbe0eb57ad0a2c944718caa89701b3ec3a50fa8fae7bb2e138c469

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