Malicious PDF — malware analysis report

Static analysis result for SHA-256 e250e8320ef8afe1…

MALICIOUS

PDF

285.5 KB Created: 2020-11-13 16:14:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6e9271859c4cd000e1d13246776dcc2e SHA-1: af7fdcc19b21299c8d47b08cf57311c34f321aa0 SHA-256: e250e8320ef8afe19047e8ce9c60c390bb7902c59bb0d2a90f38db6409bdcf13
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffine.ru'. Additionally, ML classification and ClamAV detection strongly indicate malicious intent. The presence of urgency language further supports a phishing or malware delivery scheme, likely involving a malicious link embedded within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffine.ru/aws?utm_term=action+movie+fx+editor+apk In PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/93c8420a430.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379969/normal_5f8b4ddea8606.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371497/normal_5f92726d829f3.pdfIn PDF document text
    • https://kafigibedup.weebly.com/uploads/1/3/4/4/134479504/1c6e5cec509.pdfIn PDF document text
    • https://gejizataki.weebly.com/uploads/1/3/3/9/133997606/jixoreguvu-bejelolitup-nifiropobid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371013/normal_5f9dbb7d1a135.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_5f9c98a7432fb.pdfIn PDF document text
    • https://segakimorepej.weebly.com/uploads/1/3/0/7/130738797/2066371.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370286/normal_5f8ce06960d1d.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/gofilafixu/ib_history_hl_paper_3_mark_scheme.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/37960110392.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/498746b8-4e16-4921-8429-e829a11ee676/jilutaj.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/petuzezukabigowiluwovoki.pdfIn PDF document text
    • https://s3.amazonaws.com/padoragog/tiguzajenevarap.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/segesosilegipibokilidato.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_off00042c14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42C14 5272 bytes
SHA-256: 3f7ba09d1b27b1d724b94ae6a7eef35a26b6b0d153b602939f91a403fa2b9a1c
font_01_sfnt_off00043dfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43DFB 12292 bytes
SHA-256: 8ffb707e1fd1dc541b36ff6e269b4e8c1620ffeb7ef27d24c0ad7b735d613d50

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