Malicious PDF — malware analysis report

Static analysis result for SHA-256 4863ccd80fe444ea…

MALICIOUS

PDF

48.2 KB Created: 2020-10-26 15:21:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d57d45f3deb7b29d89e5a3886be7de07 SHA-1: 9f95829dfb823ef1c7de0d35e7579e7486d1529d SHA-256: 4863ccd80fe444ea379fbf2e1ec1849614a6781844ca70896271cddbf501b343
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'utorrent android not working' and a URL that appears to be part of a link farm designed to attract traffic. This suggests a phishing or scam attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ggtraff.ru/pify?keyword=utorrent+android+not+working In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366327/normal_5f894691d8d86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370288/normal_5f8962cbdc46f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375896/normal_5f93413f95e34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377924/normal_5f969e23611ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376610/normal_5f922621cdb3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379973/normal_5f8c69f2ddb2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383791/normal_5f8e0211c9e24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393361/normal_5f9591212cfcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f86f95fa0ed9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367275/normal_5f8a78385025e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376125/normal_5f906ff39250c.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/kasodopizafazakoxuk.pdfIn PDF document text
    • https://fejufawos.weebly.com/uploads/1/3/4/3/134328201/pefek.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/8430827.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/d49001df-853b-498d-b3e8-a2d28402c389/pibulowenodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05d383fa-d71d-445b-aafa-69f182e5c7cb/datuxuxijapet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66c81f87-6e34-4de5-9441-0eef803144b7/78113205560.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/779a932a-f4ee-48e3-a092-a713795086b8/download_edgedancer_ebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9797/2629/files/pwr_workout_program.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4839/8759/files/33454229821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4115/5993/files/16072672200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8707/8597/files/venn_diagram_4_overlapping_circles.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_off00007bd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD2 4932 bytes
SHA-256: 27a03fe228ea75eb57edeae70831965275f317ac71b944d87f4d3a6a03e772b6
font_01_sfnt_off00008cba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBA 11308 bytes
SHA-256: bb26a3c45618c48ac9afd227d142343f26ccc97a77f4cd4eb3ec73b34d777e0f

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