Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed3d262e8e08e1ad…

MALICIOUS

PDF

108.0 KB Created: 2020-11-05 01:06:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: acf594f35af3ea01d1286eea830a82e4 SHA-1: ec520341ac2f7596dc80f5432fe7b9d399367c86 SHA-256: ed3d262e8e08e1adae7743d2694b7362bdc8763b680f856210e2b8bc60de7f8f
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to a known malicious redirector and a link farm of other PDFs, suggesting a phishing or scam campaign. The document body mentions 'Pokemon ex tins for sale', which is likely a lure to entice users to click on the malicious links. While no scripts were explicitly extracted, the PDF structure and embedded links indicate malicious intent, likely related to spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://cctraff.ru/strik?keyword=pokemon+ex+tins+for+sale In PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/7049f4.pdfIn PDF document text
    • https://latijazaw.weebly.com/uploads/1/3/4/3/134312978/lizubizedekifov.pdfIn PDF document text
    • https://jezulusawuse.weebly.com/uploads/1/3/4/0/134000263/navuto.pdfIn PDF document text
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/deriginop-fagolukizi.pdfIn PDF document text
    • https://zuvubexusemeto.weebly.com/uploads/1/3/4/3/134373725/tuwafupas.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/vavapekadoliti/zamemarorexeribomoselug.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/cache_only_memory_architecture.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c4980f0-5db5-4c93-a3fa-9975bc06e288/bizazu.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/akashic_records_books.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/academic_writing_skills_cambridge_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/list_of_accusative_verbs_in_german.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off000183ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x183AE 18988 bytes
SHA-256: 2d32a19b2cc141d5718b93ba015cca479cbdf625626840c141a8338cd61a07b9
font_00_sfnt_off00014d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D53 5048 bytes
SHA-256: 71fcde0af60cf87c6cfc583a272f294ba02b2353adaa7db86a45d4cb83d035ee
font_01_sfnt_off00015e70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E70 10832 bytes
SHA-256: 5d567a8d3c83e4e2b4d54ee01d19cc9cfba185df7ac075937f4d270267c7c2c5

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