Malicious PDF — malware analysis report

Static analysis result for SHA-256 eca00903c1e68aaf…

MALICIOUS

PDF

71.3 KB Created: 2020-12-26 13:31:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 174691b5b9c8f0acfccf47104cf50705 SHA-1: dcbd91e95dd4a28f6d0fae3feef38c3a4bdd16f9 SHA-256: eca00903c1e68aaffee239468a2e98e78d68399247c85cc2c00498618c08d03c
154 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 'https://traffking.ru/aws?utm_term=eliezer+ramos+reportero'. ML classification also strongly indicates maliciousness. While no scripts were extracted, the presence of a malicious URL in a PDF is a strong indicator of a phishing or malware delivery attempt.

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://traffking.ru/aws?utm_term=eliezer+ramos+reportero In PDF document text
    • https://cdn-cms.f-static.net/uploads/4426820/normal_5f9dd5803466f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_5f8cbddaed7a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489994/normal_5fe44e132356b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368751/normal_5fd6e093eae2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368222/normal_5f877c6c2d922.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426408/normal_5fae509950675.pdfIn PDF document text
    • https://leputixoted.weebly.com/uploads/1/3/2/6/132683438/jojijamopaval-gekomi-nitijarilaw-fopakorateliz.pdfIn PDF document text
    • https://cdn.sqhk.co/fawabanof/3iasM9R/pexozisavinabixen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410962/normal_5fad71c58a2ab.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/vogubivajavofu/acc_aha_guidelines_exercise_stress_testing.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/foganaveluzon.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/13240927309.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/rimebolemefofezove.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/binaural_beats_meditation_free.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_off0000d944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD944 4972 bytes
SHA-256: 84706959617ba5efed7cea286a0ba7b65e40530dc085a5d4c04219eefd492c61
font_01_sfnt_off0000ea1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1D 11408 bytes
SHA-256: 8032a9a8a9e905b46c4a3ab89dde36645e925201a1e923aa92443e96c123860e

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