Malicious PDF — malware analysis report

Static analysis result for SHA-256 194cd7d9aa407fe7…

MALICIOUS

PDF

35.7 KB Created: 2020-10-16 17:18:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c523b1bffac4eb751b389172b023d5f6 SHA-1: f005cf56aecc8318cfa4efa2c9dafb4fc9da2100 SHA-256: 194cd7d9aa407fe7828696347a27753cb60c9aeebc343c4f3b92fa40dc9f0130
94 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, disguised as product instructions. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

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.club/123?keyword=philips+avent+steriliser+scf287+instructions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369504/normal_5f880453c84ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_5f874d796a806.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f87c460dd3a8.pdfIn PDF document text
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/zofirafuvelotipuzi.pdfIn PDF document text
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/1623744.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/d51091c6dd1f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/edce3871-1d22-4e03-bd02-5853c875a12d/bizefuwasaxedafamige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f4d048d-131a-435f-b4e8-c7e78ed30ae6/83631025381.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2fd74bb-3321-498e-8473-e473899262e5/dezepejazadej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48f9d293-da7b-403e-b80f-2f0431d84b12/80831434221.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec4920f0-94af-4dbe-b3e9-c9977d2d6426/66593667404.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ff40c55-6ceb-4e73-8dd2-bc97769ccbfe/20693016126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaf2037b-5429-4dca-912f-83798b4010bc/39296076831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/java_swing_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6845/6612/files/1999_saab_9_3_haynes_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1861/6473/files/water_dispenser_stand_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7039/7352/files/4_week_weight_loss_program.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_off00004e58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E58 5572 bytes
SHA-256: 8f5326fc7872a470baa703370ebf2c02022fab72a1f1c85bb4eb6529415f4e50
font_01_sfnt_off00006143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6143 9488 bytes
SHA-256: 54dbca093fc4b85810ce4c8e0c305f67526c4ffc8ae46ecb15e09f709fd1ef15

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