Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cf7f52ffb55bd1b…

MALICIOUS

PDF

54.7 KB Created: 2020-10-29 11:44:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2b9844af80b61c61dc8ca18310770c60 SHA-1: 3e392969cb933c5ad96a543becf01632726ecf52 SHA-256: 1cf7f52ffb55bd1b40df425515d7254209e867525860e29ae9e5e2a3f97cb7ac
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to known malicious redirectors or link farms. The primary purpose appears to be SEO spam or directing users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to lure users to external sites.

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://gettraff.ru/strik?keyword=romanizacion+de+hispania In PDF document text
    • https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/476d4813f.pdfIn PDF document text
    • https://pesajupamobe.weebly.com/uploads/1/3/1/6/131607203/tipikemefuk-gegole-sajixa.pdfIn PDF document text
    • https://tuwozuzoleza.weebly.com/uploads/1/3/4/5/134509843/3f5fa9aed6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384155/normal_5f90a87c43d65.pdfIn PDF document text
    • https://pepuzategazeg.weebly.com/uploads/1/3/1/4/131453576/5535584.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377403/normal_5f8a5f982774a.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/buzuwopuduxiremomoj.pdfIn PDF document text
    • https://labajilawuja.weebly.com/uploads/1/3/1/4/131406369/jivumulexuku-woruzamo-zopinegel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374379/normal_5f91a85e1d324.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/suvex-xebubonozov-gavubukegago.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/d648e7f7-569a-4946-8325-59674cdea10f/79023123772.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2628bb6a-5f6a-4825-b5d3-e248c4cf0351/45044054593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/1753/1302/files/feruxaladamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86198076-79a1-46e7-b117-5c60a1339103/descargar_pelicula_parasitos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9045/8264/files/clivia_plant_care_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7206/1091/files/43984636905.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9445e6a0-043f-4d28-a651-847055cce6cb/99400671465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9891/5484/files/jotenajosiwunew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7224/0798/files/27177106634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/resume_samples_for_engineers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6289/2979/files/4616097894.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_off0000973c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x973C 5244 bytes
SHA-256: f48ad54804ac6d2592aef5f8b7887ce2fbc8c973fcef809e12757924f71f5484
font_01_sfnt_off0000a8f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8F4 11256 bytes
SHA-256: 98396a36250ff14f933ac79ab40aab3ec769e178426add594c2e50335ce6132f

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