Malicious PDF — malware analysis report

Static analysis result for SHA-256 5417c295ae083506…

MALICIOUS

PDF

45.6 KB Created: 2020-10-29 05:23:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b10452c190924dd321957eb7fd52ffda SHA-1: 92f084d664123dc50f9d49b527625162d7e61b24 SHA-256: 5417c295ae0835063ebe25be66d5a1dbe35f3b905d6cabaeaa95304de182c6d8
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://ttraff.link/123?keyword=alabama+deer+season+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374986/normal_5f9539dd8c70f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390641/normal_5f96302dc8fa8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369776/normal_5f9359d202bbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383924/normal_5f8c68e5248c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387826/normal_5f93da37be8b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411686/normal_5f98e7ef8906c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369646/normal_5f910acc16488.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374704/normal_5f89f2c053412.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375884/normal_5f8bb16acaef5.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/tadovu/kexefikipeziwokidejevir.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/28407499553.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/87431253003.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/2019_nfl_draft_results.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f8f3559-09ec-481c-a14e-12871b64081b/71973979581.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/tegurekividewito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c4441ac-190d-4836-94c8-dc188e4bf3e8/juxotumerikimuruwixanoden.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b65f05fb-daab-4a8c-876c-d9eda45602af/rurogusiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/sifejefuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/43294008740.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8601d910-26e1-4421-99ed-f547d190bfd9/63428306858.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/49870241064.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/earth_science_workbook_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/betimugi/jesus_calling_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/44728343933.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/446f1395-8281-4d14-a70e-b9a3f04d8583/faceing_math_6th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/the_deep_dive_answers.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_off000072f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F9 5372 bytes
SHA-256: 17d7e2ac83007ba4f225b54a9566cf87d4f4e44eecb3127ca8b64ee361ac2d6c
font_01_sfnt_off00008522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8522 10260 bytes
SHA-256: bee0315734b95099dd06ded39a088f567103139da25cb95ba2f6691df1617c55

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