Malicious PDF — malware analysis report

Static analysis result for SHA-256 552e145137f1cbb2…

MALICIOUS

PDF

33.4 KB Created: 2020-11-08 02:02:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: d2f9440d8d6f6e658d4c7a75b6a03a38 SHA-1: 796e5e7428c25ed7e445872340655bb6f36bce02 SHA-256: 552e145137f1cbb2f3584c6bea66c8d582e9cc223c6453dc6bb604e3b0000d14
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier also flagged the document as malicious. The presence of a link to 'traffmen.ru' suggests a redirection chain designed to obscure the final malicious destination, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and link farm heuristic indicate malicious intent.

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://traffmen.ru/aws?keyword=cuentos+de+la+cripta+latino In PDF document text
    • https://bipinutafo.weebly.com/uploads/1/3/4/3/134358532/5222313.pdfIn PDF document text
    • https://bilewobadazape.weebly.com/uploads/1/3/2/6/132695578/bilifibiwopopoto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379221/normal_5f97fb709922b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420905/normal_5f9ce53da77b3.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/nujosuwemedadi/phil_swift_wikipedia.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/d_evils_sir.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/breakdance_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/c_programming_tutorial_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90053cfe-068c-4d61-9676-92603555c606/xefuzoda.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/53374825724.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/34999776300.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/calendario_2019_escolar_2020_sep_190_dias.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/altar_call_prayer_in_black_church.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_off000044c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44C9 4972 bytes
SHA-256: 86155c360069633e80fdd6cf65bb250c019129b4765079da349c0afb6c26465c
font_01_sfnt_off000055b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55B7 11696 bytes
SHA-256: dfe33218d9ee7136c30729702afaca450ae9e282d95fdb13d3d7adae71c3299d

Open this report in the interactive analyzer, or submit your own file for analysis.