Malicious PDF — malware analysis report

Static analysis result for SHA-256 62173e983c7cf8e4…

MALICIOUS

PDF

61.3 KB Created: 2020-12-17 06:53:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ce6195830d219fb49105da01dab07775 SHA-1: 7099db7b65f7e518a06a7b3243e61f4077ed34b7 SHA-256: 62173e983c7cf8e4fd442974a196dd488c7bf17a51d6b60cf8277ac8ee7aef76
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing site. No scripts were extracted, but the overall structure and embedded URI suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://trafffi.ru/123?utm_term=block+house+creek+pool+hours PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393904/normal_5f9dc3ff6d05b.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/wesezuzuvalirik/moz_beginners_guide_to_seo_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/38724752820.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/6724364673.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/nasitovovire.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/vogapofamalidurizeru.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/fctc_article_9_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c6a15f1-0c07-4d84-9853-39d49a29f6f6/63333860594.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/44476958557.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_off0000b54f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB54F 4924 bytes
SHA-256: 075994fcf15a5453bc7cea86fef8b1022fb1660dbd32c144d3c17ff4358f3662
font_01_sfnt_off0000c60f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC60F 10160 bytes
SHA-256: 4eb9ee008eb1df69e3c47b3688ca3d66baab50c6f15cda52bb0c74da389be46a

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