Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0acf3b7c60e2167…

MALICIOUS

PDF

36.9 KB Created: 2020-10-16 11:05:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 20c6b712c3a33fcb8325d597d9b1f1b1 SHA-1: a0c269dbd85c7f8381f963482d32ad8181180222 SHA-256: e0acf3b7c60e21670dbfa25cebd01551ac51e4df317d997f9c72536d4987021f
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.club/pify?keyword=nordic+beach+wrap+washing+instructions In PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/49b698af23.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/wexaboninikig_wurodirup.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/18ad995.pdfIn PDF document text
    • https://dubuzosokiboxof.weebly.com/uploads/1/3/1/1/131163723/a4683da.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/jinitorip-bolag.pdfIn PDF document text
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/fff4608ac61.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/1/0462/3669/6725/files/modelaje_masculino_que_es.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8497/0139/files/pagelefadujezer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/9686/7487/files/67144928268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6625/7308/files/weber_performance_horse_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4528/2214/files/1439741415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8579/1383/files/75023639982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2772/5477/files/babejukuvivakikajivodub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bdf4a49-ee18-4cbf-ac00-0bb90ebbe3a3/wogovemusurakovuridirabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2146d06-fe46-4edd-b4c6-a3383f4f9c57/69512539146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7540/3936/files/sophos_utm_sizing_guide_9.4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1380/6486/files/42741152136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0558/1211/files/xubebenid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/6651/3312/files/45659389768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8324/4714/files/scholarship_letter_of_recommendation_from_a_coach.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_off00004f42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F42 5504 bytes
SHA-256: eddc4afd9afedb1e7ea104a8a2d179b82141ff1e97fa0c82610204a996a41d71
font_01_sfnt_off00006208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6208 10444 bytes
SHA-256: 44282fd2b2ea6fa478fd1a29792e52d6268e2cd1317169141dea5efe66692235

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