Malicious PDF — malware analysis report

Static analysis result for SHA-256 62d8af40483724f1…

MALICIOUS

PDF

76.6 KB Created: 2021-01-03 22:39:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: fac4323a0c9993dc207cb6f43f6da60a SHA-1: e8545cf79dca358d3ce59917b15bebfa36a36e25 SHA-256: 62d8af40483724f1c143ea8894586eac0fa179075a2202e3e3b667fa562007a1
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://cctraff.ru/123?utm_term=the+standard+fire+insurance+company+florida+phone+number' is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and the malicious link strongly suggest an attempt to lure the user to a compromised site, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://cctraff.ru/123?utm_term=the+standard+fire+insurance+company+florida+phone+number In PDF document text
    • https://xazojitov.weebly.com/uploads/1/3/1/4/131408465/ropirivujazu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369663/normal_5f970773430e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413113/normal_5fc903ddb3b7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392871/normal_5fe617c805f67.pdfIn PDF document text
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/joxegabufutasazuj.pdfIn PDF document text
    • https://likerediweraj.weebly.com/uploads/1/3/4/6/134691167/9d13f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_5f88cd8df4186.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420025/normal_5fcc41281910a.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/fodose/list_of_dominant_and_recessive_genes.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/vowufazegelegijuvug.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/36245912202.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F3 10676 bytes
SHA-256: a15001d13d8ba8fc96d45e76f0e053b906640bbede8d6377bd829f5d46ed032b
font_01_sfnt_off0000eb26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB26 5588 bytes
SHA-256: f61c70e4798d07de82108a21f8ddb35d4841aed8a8cb1f06afe625f4deabbd74
font_02_sfnt_off0000fdfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDFA 10932 bytes
SHA-256: 832cd1f8eadf63199ecc836b018f309a24fca6455d774fb9b805ca3a5325b637

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