Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bbc482a9755848e…

MALICIOUS

PDF

64.8 KB Created: 2020-11-04 02:15:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: cceb64f8b3219c11a1a5fc45afca844e SHA-1: d9e1648d302f79770e9e2b46a9e6e1bb19d9748a SHA-256: 5bbc482a9755848e0568b325d6d61c0e356b4f37af9a5640c8a3536a2a1065d7
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://ggtraff.ru/strik?keyword=swtor+gods+of+the+machine+bosses In PDF document text
    • https://nobozufale.weebly.com/uploads/1/3/4/3/134322784/f1454eab203.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404524/normal_5f99bd23eb017.pdfIn PDF document text
    • https://vajibudutoneraz.weebly.com/uploads/1/3/4/3/134345344/8cbdf99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412889/normal_5f9ca1034ea5d.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/1/0435/6577/7059/files/mobile_communication_system.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/accounting_internship_cover_letter.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/jevit.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/vitamin_b12_diet_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2907/2552/files/vw_passat_1996_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/518ae430-faca-4c6d-83cb-c1a225e59ff9/nubabivibulebidixalikof.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/22456278914.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46a89afc-9250-4d52-a90e-e6aa31fe1fbe/nolubeliwajowa.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_off0000bdc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDC2 5736 bytes
SHA-256: 4195585308976ad1abb162adfa8c53740ecf179ebaf476c9504c1a5c6f54f0ce
font_01_sfnt_off0000d134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD134 10880 bytes
SHA-256: daf425237b45cc61c1e3ce08a5295b276560208cdf4e247c0121c827f9bfbd96

Open this report in the interactive analyzer, or submit your own file for analysis.