Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fd607192069fdaf…

MALICIOUS

PDF

48.7 KB Created: 2020-10-27 02:59:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f0bfc8ba7df1da80282f67adf7c485c9 SHA-1: de5bd2f00d9703b1df5e65715c8516537c85746e SHA-256: 6fd607192069fdaf672e29976971c79b8c6018a56ecd5ecbf3be4773a4cd0cfe
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is likely intended to lead the user to a phishing or malware distribution site. The document body and embedded links suggest a lure related to downloading software, specifically mentioning 'Periscope app for pc free download'. The presence of numerous PDF links, many pointing to benign Shopify domains, indicates a potential SEO link farm strategy to improve search engine ranking for 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://gettraff.ru/strik?keyword=periscope+app+for+pc+free+download In PDF document text
    • https://galavalo.weebly.com/uploads/1/3/4/4/134464717/29da501cc568e.pdfIn PDF document text
    • https://favopitovuseb.weebly.com/uploads/1/3/4/4/134455409/a3b68cacc2f4c1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7649/2733/files/minecraft_wallpaper_4k_for_mobile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8387/2453/files/iskender_pala_abum_rabum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4649/3605/files/electricity_and_magnetism_study_guide_s8p5c.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b136039d-0b85-46fd-b864-ab0f9eefe1ce/genaratas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/850c3e6e-4814-4fa6-8afd-d6a6a7040af9/77117979490.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f53772e-0c6e-40b0-96f6-5cd86b380d61/vuvonivaporusodikerar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e89f2de-b032-4634-bb86-c2ff83dbd01d/rokufejabagerenunif.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/jemivepipuboz.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/batch_file_commands_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8170/3319/files/fuwixilevugagek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9050/0001/files/mens_ring_size_guide_asos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/8676/0086/files/426026430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8486/0578/files/compost_tea_brewing_manual_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8667/8678/files/krauss_r._sculpture_in_the_expanded_field.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8697/7441/files/luzun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4916/2654/files/pagilajafuxejitejufubuva.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_off00007fe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE8 5240 bytes
SHA-256: 580f6ec9f9c471ea6a77008a15d7c1a30f63a4954a24b11d56497aa73102a725
font_01_sfnt_off000091d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91D7 10444 bytes
SHA-256: 3279a721623dd9221bd6fefc7ca08e116ccf7824e4e3f13083dabf4fa941f149

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