Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca62c65b1bd9c3de…

MALICIOUS

PDF

73.9 KB Created: 2020-12-28 22:10:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 32629da13ace15398623f8ba09bfb79b SHA-1: fe1c0132de53f665ff0e8714ba529bd0d47e6729 SHA-256: ca62c65b1bd9c3dedd52af20c59a2b7583ddb9529fe0f3d698980e7446022334
214 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical alert for linking to known malicious redirector infrastructure. The PDF contains a large number of embedded links, many pointing to external PDF files, suggesting a link farm or SEO manipulation tactic. While no scripts were extracted, the presence of malicious links and the ClamAV detection indicate a high likelihood of phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=top+100+nfl+plays+2020 In PDF document text
    • https://xonedapu.weebly.com/uploads/1/3/4/6/134654428/mogusaduzu-morabufo-zadafarav-namunosakim.pdfIn PDF document text
    • https://xelefivaj.weebly.com/uploads/1/3/4/2/134234850/biruzugefuwod.pdfIn PDF document text
    • https://fadusoga.weebly.com/uploads/1/3/0/7/130739873/manemizisebalig.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/5292646.pdfIn PDF document text
    • https://cdn.sqhk.co/navififoro/jhiiehg/3267215061.pdfIn PDF document text
    • https://cdn.sqhk.co/wetilusogaki/3i0ibGC/threads_from_instagram.pdfIn PDF document text
    • https://vukasusig.weebly.com/uploads/1/3/4/3/134349680/5cf0552.pdfIn PDF document text
    • https://cdn.sqhk.co/lofopapenow/WhfjfNx/doxadolab.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/lomiwexuva/69853697531.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/11893142501.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/apk_hack_wifi_tanpa_root_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/boca_vs_real_madrid_2000_formaciones.pdfIn PDF document text
    • https://s3.amazonaws.com/wisatutadi/avast_internet_security_2018_license_key_till_2050.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/biophilic_design_the_architecture_of_life.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/vulasijo.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/34593928285.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_off0000e446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE446 5176 bytes
SHA-256: 73382a9b0767515a3fcd0e2fa54a77122618e3d0fb2f326022e50f39d9132561
font_01_sfnt_off0000f60c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60C 10848 bytes
SHA-256: f2fb3ce425dca8b4486682c4e2cb8cb06f07e429921ea4d49c6f17c35f60da65

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