Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84fbf600e917304…

MALICIOUS

PDF

45.1 KB Created: 2020-11-09 09:43:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3c7128acb94a84fcd76029a6231966f5 SHA-1: 22b30122f6108adfa7985b107474cce31006e5b0 SHA-256: e84fbf600e9173043f3e5e118b053b43e67ab1be44896d560296dfbcc605065d
96 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 embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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=naruto+shippuden+episode+163+english+dubbed PDF link annotation
    • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/85c64d55f.pdfIn PDF document text
    • https://jezaxegare.weebly.com/uploads/1/3/1/3/131380636/5644166.pdfIn PDF document text
    • https://jomojakadawubo.weebly.com/uploads/1/3/4/4/134448567/xamefejisuzif.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/zuxadol/kukipipemopasojibufal.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/bajau_samah_kota_belud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03617182-2a7c-41d6-ba8d-35eae7a77a1a/tilesukuvezulasesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1ea5221-984a-48ce-b467-b68bb59992dd/6756599088.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68684d90-4677-4c66-8d73-cf3cff11e533/xomikepixonaw.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/28058059513.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/trek_antelope_820.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/35204987187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f52869fa-450a-45d6-9e94-850b59eb9660/papadejalipafapa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0296120a-a688-41a7-9b4e-273adb911ab1/42406380640.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/237d5038-8172-4dd2-9209-d68d09001642/pelazirulatojizo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/246332d5-4341-4fe1-a1ca-cfa05473661a/86507892370.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_off00006d12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D12 5700 bytes
SHA-256: e49b5cc863a056cca2c5b78bf65dc00311b4cfa3662f741aa76aadef185d889d
font_01_sfnt_off00008070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8070 11608 bytes
SHA-256: 8a85218455f2cd282b1ba899055f42128a280f9d8b47be94af8bc57cfd0f362f

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