Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec2025efb67ae600…

MALICIOUS

PDF

54.1 KB Created: 2020-10-27 03:01:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 8a4c568872e28d6638f34b094b4a5079 SHA-1: 62bc7ef01b70f29033a1c60721b5d41db46b23f2 SHA-256: ec2025efb67ae60055cccde542edb4d244637c014885f25e395d81152911cd8a
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.link/pify?keyword=derrida+speech+and+phenomena+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368958/normal_5f976461d19aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413575/normal_5f9770221dccc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386822/normal_5f8decc411ef4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388432/normal_5f9377be67c11.pdfIn PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/7b4c3ad80.pdfIn PDF document text
    • https://xawuwotogot.weebly.com/uploads/1/3/2/6/132695388/jafinupud.pdfIn PDF document text
    • https://sabidodavo.weebly.com/uploads/1/3/1/4/131408103/e96a3fa2bef86.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/bfaf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393041/normal_5f93eb197cf98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f8c60b4d173a.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000092fc.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000092fc.bin)
    • https://uploads.strikinglycdn.com/files/505e163a-18aa-4510-97ed-114bd1879944/vuvuvolakiwiwetawutogovaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/723c8c1a-dfca-415f-9d10-72c5255253d5/43283875495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5362/0634/files/zewarirudazatesur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9538/2939/files/panasonic_32_inch_tv_smart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5719/9277/files/modavaxirusuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8697/7441/files/magnus_chase_hammer_of_thor_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/9241/5909/files/43260704648.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5db8e134-a592-4a98-a2bf-c790ab6797d4/jagaviv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a1834aa-8160-4dba-874d-424c4cb59c23/46081684523.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/818e7021-50bb-4986-aeb5-58fdf2489bf0/kupotif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acffbe06-2319-4b70-8274-a01f38bcb5dc/85035868883.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b32b366-3c83-45e0-b9cc-35295b54739a/75545281369.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 extracted file (font_00_sfnt_off000092fc.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000092fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92FC 5360 bytes
SHA-256: 8e34c7bdd2ec6ced90acbd84d3ba8500101efe3b5063c52b21eddd613bf76e71
font_01_sfnt_off0000a507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA507 10656 bytes
SHA-256: 1d37b821dc91e2f06576c473aefb05e53f741f2844824da027e6dc2f623ddc76