Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd6ebc2d54a96e2a…

MALICIOUS

PDF

40.9 KB Created: 2020-11-06 04:01:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: d7731b6dd95c40b8c23e1c2c1487d280 SHA-1: ab15d01ecf8bcabca922c6f05b5722b53e5cd3b5 SHA-256: dd6ebc2d54a96e2aca459c96d48894d8e41134d93cd3a3d403bb37eb3d0d7b02
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://traffking.ru/aws?keyword=natura+beauty+cream In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384308/normal_5f9f41db99596.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f8ba8c176613.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f90dd91d666f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418167/normal_5f9999112fe26.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/fijijiweteredi.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/7603656.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378393/normal_5f8ac34c46337.pdfIn PDF document text
    • https://podesasi.weebly.com/uploads/1/3/1/4/131437149/tabiwej_zuzulasop_lufosuw_nexepax.pdfIn PDF document text
    • https://xoselobukakuri.weebly.com/uploads/1/3/4/4/134498653/a7b2d1eb02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387565/normal_5f9695fd3980f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370996/normal_5f882f78461fb.pdfIn PDF document text
    • https://deximuxinudob.weebly.com/uploads/1/3/0/7/130739142/fapukugadinev_kaberal_sixomonajuru_defokisewomef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00006186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6186 4948 bytes
SHA-256: b076090ae6c0e168f20d369336ed8584969fdf05ceca0da7f41323813ad33075
font_01_sfnt_off00007256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7256 10804 bytes
SHA-256: 1ae6c3879c5826a870766065b31d3219bb12ecbbd8b6bd806c7c4e684799097e