Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba615596222bda2d…

MALICIOUS

PDF

43.8 KB Created: 2020-11-03 20:57:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 66917e1ec3ba8b96bc9b5f0e1c993dde SHA-1: d69dfae400b8eabe328983c9ed00bb1ecfa7b5de SHA-256: ba615596222bda2d6fa74859feee35f3595e805ee139b114cfbfb6c544db2301
94 Risk Score
Tags
free-cdn-ebook-manual-lure

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=diablo+3+build+season+18+wizard+beginning In PDF document text
    • https://cdn-cms.f-static.net/uploads/4406191/normal_5f9e212b89135.pdfIn PDF document text
    • https://jilibawijoza.weebly.com/uploads/1/3/4/3/134363321/nudiwinew_pupujikinuvur.pdfIn PDF document text
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/ponuwovisu.pdfIn PDF document text
    • https://gukaguse.weebly.com/uploads/1/3/1/3/131398473/wibepus.pdfIn PDF document text
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/6770895.pdfIn PDF document text
    • https://kobijetiva.weebly.com/uploads/1/3/4/3/134322382/b0915b420a1c08a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369765/normal_5f8b22ac1d1da.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/mijedusovineti/81583954262.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/hau_bsc_agriculture_entrance_exam_question_papers.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/zaribupudig.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/77221638177.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_off000069ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69EF 5684 bytes
SHA-256: d4401a1f6d94b33e792539ce577b098ec4c1219cb3255268f06b0ec6d0079ae4
font_01_sfnt_off00007d71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D71 10964 bytes
SHA-256: f1474fed6e251c1f73f6a2a6cc47b48a8a03d3f9e725a962e82cd14a0832414c

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