Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ba57f8fbc7d549…

MALICIOUS

PDF

41.2 KB Created: 2020-08-28 12:55:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9756cdb0eb155d248f5ebbf26ba98ead SHA-1: bebfa3ad55c4aeb0e96c32008e298a853dbd5c03 SHA-256: c0ba57f8fbc7d549b9a15846ccfa92651f29f62f982241d579f5430855204e45
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://ttraff.com/pify?keyword=how+to+draw+anime+books+pdf In PDF document text
    • http://files.jcwitzky.com/uploads/1/3/2/7/132740350/nujuxigi.pdfIn PDF document text
    • http://sesufowo.davidreeb.net/uploads/1/3/1/0/131070161/tuduguvitipen_sijol.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/1/0430/3237/9545/files/bavuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8198/2361/files/95367968473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/refafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3218030698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1609/3849/files/nadedonuwuruwudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/17245313312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/damovilopuru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9842/1913/files/benewixebejitafebegivopex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1682/2679/files/74416231834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8198/0321/files/dahua_4mp_ip_camera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5245/7369/files/90600523693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5811/9334/files/bojagelitawupamojan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16216600544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/39429818387.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_off000064ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BA 5412 bytes
SHA-256: cd65162ade9e62423053c91903c7c8a8b6d96a06e8f7b2dde3872681e4f9ba92
font_01_sfnt_off00007718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7718 9668 bytes
SHA-256: 6f35220119ee062af705a7d8714cf9992660f20885118ad1fb55cba10acd6354

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