Malicious PDF — malware analysis report

Static analysis result for SHA-256 c44a2bd24948503c…

MALICIOUS

PDF

41.7 KB Created: 2020-11-02 21:43:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 43ed3770b24ee0ac55069457be0dd79a SHA-1: 986eba62349cd8197ccf09a08f2808e8e6325138 SHA-256: c44a2bd24948503c2a5c1f658947da383c965340941abfe397a21fe2d2f84978
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://cctraff.ru/aws?keyword=what+made+maddy+run+pdf In PDF document text
    • https://nunezexivu.weebly.com/uploads/1/3/4/4/134440215/sakev.pdfIn PDF document text
    • https://botubadixebom.weebly.com/uploads/1/3/1/4/131407995/5925643.pdfIn PDF document text
    • https://wimiberurazem.weebly.com/uploads/1/3/4/3/134351881/loporelefej.pdfIn PDF document text
    • https://kobigaxa.weebly.com/uploads/1/3/3/9/133997295/bonibera.pdfIn PDF document text
    • https://bajumavo.weebly.com/uploads/1/3/4/4/134486103/f2b15753.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/tejuvonixag/cash_flow_statement_indirect_method_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/hospital_discharge_papers_example.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/ocean_front_property_in_arizona_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/cetamina_bula_profissional.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/siferaxex.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/gejipunagap.pdfIn PDF document text
    • https://s3.amazonaws.com/radaruropivoje/bogagunevapi.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_off0000655b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655B 5188 bytes
SHA-256: 34ee8a9734b89b286f147d25ec5346c7b4a65097d0e7c5d2556ea9955f3684ae
font_01_sfnt_off000076ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76EA 10444 bytes
SHA-256: 6c583462b3ef326bfa31b8abc0178aba8e7125917d2664bb843a0a20d2c94e0c

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