Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f092c33f7a3e4b4…

MALICIOUS

PDF

43.3 KB Created: 2020-11-08 08:38:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c8f671ce7098ad647afa4b0b139b5a24 SHA-1: d4f10e5ab6561a1208ec6cc616808e50808e0453 SHA-256: 2f092c33f7a3e4b4f59b50ad264eeff0e586d84c9a55044388d2aec6e13589f3
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing indicating it's a malicious redirector link farm. The primary malicious URL identified is 'https://traffking.ru/123?keyword=green+world+coffee+farm'. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to direct users to malicious content, potentially for phishing or malware distribution.

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://traffking.ru/123?keyword=green+world+coffee+farm In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372382/normal_5f890cc84c7bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426060/normal_5f9ae420e9f5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370051/normal_5f8dfe1b5e91b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421472/normal_5f9a2d9ebc762.pdfIn PDF document text
    • https://keboxatoxumire.weebly.com/uploads/1/3/4/5/134591907/patanokovanaw.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/padadutiseni/arabah_joy.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/aw_tozer_public.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/soveputefoxokolinedez.pdfIn PDF document text
    • https://vuxuwavu.files.wordpress.com/2020/11/modern_database_management_12th_edition.pdfIn PDF document text
    • https://mutozofe.files.wordpress.com/2020/11/67728004733.pdfIn PDF document text
    • https://kakutojuzi.files.wordpress.com/2020/11/finepelowazebeb.pdfIn PDF document text
    • https://boredagibeve.files.wordpress.com/2020/11/51933282230.pdfIn PDF document text
    • https://petivubeso.files.wordpress.com/2020/11/69773296266.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf2d311a-5967-435c-8e1b-d44003e4d5e4/23644148654.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/tusumivuginavipoxenagol.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_off00006c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0D 5112 bytes
SHA-256: b18c251fbb2a981bb487c0908fa75c7bcb1f28271243d235655d43ec66ea59ee
font_01_sfnt_off00007d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D75 10120 bytes
SHA-256: 3429a92b199a2a4a66f350b621d0407573da18d41ab2ce9c0afc505d20844547

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