Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dc75f59fa363853…

MALICIOUS

PDF

50.5 KB Created: 2020-10-27 12:21:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 26abd6b26e23b71f091ad1c0063503d5 SHA-1: 211b8bd6fa5fc8fbae2b681e6ed252f3adf9dca5 SHA-256: 4dc75f59fa3638532394e5d8493a202ffe028bedef8285c130040f733f395a39
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/strik?keyword=minecraft+windows+10+edition+hacked+client+download+1.16.1 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375209/normal_5f8a2762bf611.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367005/normal_5f9134167dfe0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f870b498a9f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391623/normal_5f974cec771c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379719/normal_5f9764092d270.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404116/normal_5f94d0dbc6ed3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375531/normal_5f92c4551a4b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425726/normal_5f97912a9a2c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373243/normal_5f974735ca549.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418786/normal_5f962b1b38370.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384472/normal_5f900c4ce09a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377909/normal_5f8f8ee6ab098.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a066ffef-2d97-49c0-adca-e01f98e457c3/56373409036.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d12cd0bc-a0f1-4e66-8cf2-2dff067fa70f/start_with_why_audiobook_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f750b870-5def-4255-888b-9224a0b79f98/jimurefipon.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/aptamil_pro_expert_zubereitung.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/55020811116.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/stream_of_consciousness_technique_in_to_the_lighthouse.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/xixakexulasupo.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/brayton_cycle_efficiency.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/2965745261.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D21 5440 bytes
SHA-256: 7aadc8d04f156ff28c1a9c6e92ef4bb2f99f61a5fdbc8c117cd61f05e7a11f74
font_01_sfnt_off00007fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA4 3720 bytes
SHA-256: 40ef96da86b6123d577d475be460de15c41b9ca7393a8e650be4e9942aa3c64b
font_02_sfnt_off00008b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B06 10124 bytes
SHA-256: 2bc99af3616cca5ecc3164d908a888a37d3e47cc20ba37ad28d1078294574c33
font_03_sfnt_off0000ada4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADA4 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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