Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c00201e8ed9fb10…

MALICIOUS

PDF

70.9 KB Created: 2020-12-02 08:45:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 57faa2786c460a2295a7908320df9548 SHA-1: 16fe4252526fc34ba79b92b069be2bb2c967e17a SHA-256: 4c00201e8ed9fb1084d0a2df436cb873539541c310cee6f9efe28bad188537b9
96 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for phishing purposes. No scripts were extracted, but the presence of the URL and the malware detection strongly indicate a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=how+to+wrap+togas PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417980/normal_5fbf2ad6897f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410976/normal_5fa25c51c2462.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374199/normal_5f96bbba18b81.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0c362403f5353fd950a5e/t/5fc5c9414f98375720a766e3/1606797634111/tarek_el_diwany_linkedin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/690eecb6-5c33-4d6f-83c7-7cb7aa95fa67/food_network_channel_on_xfinity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c461e48-6e6c-4e70-aa72-0406e33f3ccb/fuvelilatotewe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfac86a371610b8774b66/1606220489221/regokigisipidijonufawolo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5aff1972c46e3c961aeb/1606376191927/tommie_lee_andrews_forensic_science.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd9fec917750a3d7b949/t/5fc22729fa04221c7168316c/1606559532425/como_se_hace_un_cuadro_comparativo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0eacbc14dfd36fef1915a/t/5fc222227acac6192a093ebf/1606558243781/ragoranavemoxetivo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51b03517-b03c-43f3-a2fd-c86a5a0e9b07/tabla_periodica_vacia_para_practicar.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6883f8cdb769c6db28ee/1606379652499/resume_accent_mark_in_word.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_off0000da7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7D 5008 bytes
SHA-256: d86dd23c0010321341e4792270db6292ccff08f8d737f4d47076fa5485d2a96f
font_01_sfnt_off0000eba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA8 10340 bytes
SHA-256: 979373e0b96347e8232be4f15d2c3b9a8c602ce5caa245e1a56864c8785c9a71

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