Malicious PDF — malware analysis report

Static analysis result for SHA-256 25ee30f1a79d2448…

MALICIOUS

PDF

63.1 KB Created: 2020-12-21 19:59:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5f9d09ba4d24d3ced6469d8a5209575f SHA-1: 760c2f3497c0f9a253841bf9953768e9968b40d2 SHA-256: 25ee30f1a79d2448bc9a184f9eb926cac3c2e4d1b02bd2b15d89aafc173b62a2
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to reference a movie title and keywords, suggesting a lure to trick users into visiting malicious sites. The presence of a link farm and a critical ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffmen.ru/aws?utm_term=garfield+2+tamil+dubbed+movie++tamilrockers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387933/normal_5f91f2b552a0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443809/normal_5f9ca10babba9.pdfIn PDF document text
    • https://papokerudinex.weebly.com/uploads/1/3/4/3/134310480/3893955.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/wexoteluwag/area_of_polygons_and_circles_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/punctuation_worksheet_for_grade_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8a57815-b110-417a-966d-ac05f8082220/science_of_logic_philosopher_crossword.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3d3d70b-2566-4128-a957-feefe838a106/solving_systems_of_inequalities_worksheet_kuta_software.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/kuwubusam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc844a27-5cd9-4dec-90a2-c1e09fda0225/66632172419.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/80107848016.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/barclaycard_ppi_query_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ed90f79-1022-4682-a94b-3a671049addd/8114803237.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_off0000b9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9C7 5596 bytes
SHA-256: 94fcbb756166158991c6d0eb48961d00c364e2cc618f37200149b2239ca4cd8a
font_01_sfnt_off0000ccc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC4 10228 bytes
SHA-256: 5f51e4ce3f51255b780c785c67225b63a02e99afa70b6c734b1aaf1588f1b48b

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