Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc974a9c8b86e344…

MALICIOUS

PDF

34.2 KB Created: 2020-11-04 22:59:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f6a45ba49cb73d577c3bd4dc0ef44410 SHA-1: d3c18daa85038a440115a783978a2d491fbce63e SHA-256: cc974a9c8b86e3440bccc409b1d45710b4e42c585d399ca42ccb8088f28cf0fb
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is likely used to funnel victims to a malicious site. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lure users to a compromised or malicious domain, potentially for phishing or further malware delivery.

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://ggtraff.ru/strik?keyword=earth+rotation+and+revolution+worksheet+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365539/normal_5f92d60b7993e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f9282aad4c5c.pdfIn PDF document text
    • https://nurixuwabojud.weebly.com/uploads/1/3/4/5/134587723/53a3a0008cf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393026/normal_5fa2413fa265f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369164/normal_5f9877abd106c.pdfIn PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/8fbb684b2ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367665/normal_5f9f943f02aba.pdfIn PDF document text
    • https://jefogozadiz.weebly.com/uploads/1/3/4/0/134040800/2465455.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459481/normal_5fa1cbbf90570.pdfIn PDF document text
    • https://gavawujag.weebly.com/uploads/1/3/4/3/134370084/9309179.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427506/normal_5f9c8bd5ccfef.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/98e075be-634a-4dea-ac40-6f09d4b169e4/jinel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c89d856-195a-4814-921f-a439b12bd579/82885864566.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_off00004795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4795 5300 bytes
SHA-256: 27fb252e2639c088485d35cc4d0a852b8aedbcbb1535b7016358e6dba25b9f6c
font_01_sfnt_off000059ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59AE 10044 bytes
SHA-256: c49d477d972bce8c8250696e68ceaec02ee41863973e50a9c4a40507347769c6