Malicious PDF — malware analysis report

Static analysis result for SHA-256 32ad8ede7c50af47…

MALICIOUS

PDF

59.3 KB Created: 2020-11-10 02:37:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: ada46064114d04ea508ad570f45feb95 SHA-1: 8df21def3d55d653aa6d6a7cd1d91899826cba8f SHA-256: 32ad8ede7c50af4749fd7d759b445479ca8a8d9e61d3db4526d31aa2d6dbcd57
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffe.ru/aws?keyword=smash+bros+ultimate+joins+the+battle+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405197/normal_5f93cec8466ac.pdfIn PDF document text
    • https://jurizimobijagi.weebly.com/uploads/1/3/0/8/130874317/muruxagisojevimix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392210/normal_5f99407c5b813.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/rivezijatisaworez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367625/normal_5f87a256538fe.pdfIn PDF document text
    • https://kajukuka.weebly.com/uploads/1/3/4/3/134307777/kapajow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377114/normal_5f90a9ccb8470.pdfIn PDF document text
    • https://refanoripusegu.weebly.com/uploads/1/3/4/3/134306014/fagemi.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/naxizugenabi/67061327955.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/mendelian_genetics_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/36945662715.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/90962307458.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_off0000ad11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD11 5376 bytes
SHA-256: eaa40ec452c411bf62662bca9a385770fb9de4238bf2a481dfaa1ccdbf426bf1
font_01_sfnt_off0000bf28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF28 9836 bytes
SHA-256: 9e0a55205e1abc8fc76cea8c60c8b55346d83ec89e740b4000337133c3ed445e