Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ce2ef02db9b478c…

MALICIOUS

PDF

34.2 KB Created: 2020-10-02 19:52:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 466bbcfca8afa6c23f761bb3174a281f SHA-1: 7ced4a23d71e06c3fea83dc4cc7c7f4648a691f1 SHA-256: 7ce2ef02db9b478c4ec6b3a833367f160e5d5ea2053a92aaddde4067c21ee912
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://ggtraff.ru/strik?keyword=book+thief+test+pdf In PDF document text
    • http://mawel.renaissanceintuscany.com/uploads/1/3/0/8/130814229/gerisop_gasenukej_xadur_nozurewekuvup.pdfIn PDF document text
    • http://files.praktische-philosophie.org/uploads/1/3/1/1/131164519/4614665.pdfIn PDF document text
    • http://files.chicagocitylimits.com/uploads/1/3/1/4/131406688/kikirap.pdfIn PDF document text
    • https://site-1037094.mozfiles.com/files/1037094/49834487997.pdfIn PDF document text
    • https://site-1036646.mozfiles.com/files/1036646/42565303380.pdfIn PDF document text
    • https://site-1039921.mozfiles.com/files/1039921/xenofibonesolazavitusivi.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/1/0483/7598/8384/files/54467677724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6853/7509/files/ketuxijupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7835/2034/files/locke_and_key_comic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4122/9470/files/76734562610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9307/7405/files/a_practical_guide_to_splines_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1855/4010/files/anda_curso_elemental_2nd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9456/3221/files/67957275609.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_off00004905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4905 4904 bytes
SHA-256: e1e8208e39ff3e26b0ce871a45a9ff53d886492e529105c989de7539d9afa83d
font_01_sfnt_off000059c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C1 10128 bytes
SHA-256: d13ae515b8883f49812bcab580eca3a1c2e0f0486aef3bd1f8d5427eefbf9700