Malicious PDF — malware analysis report

Static analysis result for SHA-256 235c070bc0e26d2b…

MALICIOUS

PDF

65.7 KB Created: 2020-10-17 20:52:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3d8e477e8b26647c03f37f9bfbd812fb SHA-1: ec7861c73e5eff7ec5b033cf8b424d249b9a459e SHA-256: 235c070bc0e26d2befad03252b34ee60d65fb1a631303a662d5db5f7182f6eb7
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://gettraff.ru/123?keyword=voice+over+lte+volte+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371003/normal_5f8afb01c073c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378165/normal_5f8aaf4467a85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368759/normal_5f896ca68e77b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374698/normal_5f892c24ca6c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374703/normal_5f8a0dba2863a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375195/normal_5f8a1f4141510.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367640/normal_5f87567971e46.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/1/0432/3262/4797/files/code.org_unit_3_lesson_5_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9839/9139/files/gaxemogifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3669/6995/files/20520355646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0863/8106/files/33129773277.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8577b7f2-c17e-405a-bbf6-159bfa13e145/dijavafavaxolejesi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b1bb0cf-fd10-4831-83a4-a14beb534d4b/robozosizoxavopumetixux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e5e835e-a0a9-4d95-961e-8bef1e707516/zajovutufowefufujosi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/900bfe93-1dc2-42fb-a652-0f5d927976a7/pobre_ana_characters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18c62c09-fe9f-43b8-9033-3e58cf866a0d/fasidaroma.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009da5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DA5 7168 bytes
SHA-256: f19f2b482cae434a44e9bee177ab0cc26691aa4d0034e81e9b71a8984f0ebd6c
font_01_sfnt_off0000b5c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5C0 4784 bytes
SHA-256: 3f4a5cdec67f3734a9d947010feb7c5d8d992236d4053ff802ba45d7f678a99d
font_02_sfnt_off0000c618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC618 16612 bytes
SHA-256: 774926d808e3841b0815743954a238b75ee6c3ae1ac6b116859278af85baed3f

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