Malicious PDF — malware analysis report

Static analysis result for SHA-256 2595ab5b1c81aabb…

MALICIOUS

PDF

43.5 KB Created: 2020-10-02 01:27:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 69abe3fab281decd72b4e451248204d0 SHA-1: d52e85c51e7466dc5ab6e0cff76fba8a9d41c67f SHA-256: 2595ab5b1c81aabb66cbad3f44bab44e6d34041695239209a41a3717054374cf
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://cctraff.ru/strik?keyword=electric+vehicle+charging+infrastructure+in+india+report In PDF document text
    • http://lifuram.qk9c.org/uploads/1/3/1/0/131070792/8039445.pdfIn PDF document text
    • http://mabud.scigo.co.uk/uploads/1/3/2/6/132681293/kusikuwevovir_fovodur_nijukevi.pdfIn PDF document text
    • http://files.johnvukusic.com/uploads/1/3/1/3/131380031/c3ab01de1d6896.pdfIn PDF document text
    • https://site-1037821.mozfiles.com/files/1037821/sawibipekumiw.pdfIn PDF document text
    • https://site-1038611.mozfiles.com/files/1038611/sitatomijovezadar.pdfIn PDF document text
    • https://site-1037202.mozfiles.com/files/1037202/79919121120.pdfIn PDF document text
    • https://site-1037840.mozfiles.com/files/1037840/fulawudatitexetuzonogupid.pdfIn PDF document text
    • https://site-1038592.mozfiles.com/files/1038592/fapomabopabagazov.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/1/0479/7867/6380/files/zg_survival_hack_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1463/8744/files/25261764014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/bikafomojirasesadeninoxef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0364/9953/files/oxo_food_mill_video.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_off00006b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4D 5432 bytes
SHA-256: e9a26330cb876d85026f2443bd57a7b58cecf21a8c95e2e1b43c0dced622ec57
font_01_sfnt_off00007dd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD2 10212 bytes
SHA-256: 98ef52749be56aa6add1cbd72e621bfa508887ab08abe2588608d2f52cbdb723