Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0263bdbf4862ca5…

MALICIOUS

PDF

48.2 KB Created: 2020-10-05 05:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 67f2ad3db94e8ab63d56b52d7824eb4f SHA-1: 67d6410945dfc9412d2dedae346a0e72a6a99ff9 SHA-256: e0263bdbf4862ca58a928eaeba715de3e794992ec1c061fe6baa125fe29776a6
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=star+wars+visual+dictionary+episode+8 In PDF document text
    • http://rudobigap.alisondowell.com.au/uploads/1/3/1/8/131871674/lekujini.pdfIn PDF document text
    • http://files.postalhistorysociety.org/uploads/1/3/0/7/130738984/fotifemuvo.pdfIn PDF document text
    • http://files.dpgeog.com/uploads/1/3/1/0/131070718/8306212.pdfIn PDF document text
    • http://files.lgcsf.org/uploads/1/3/1/3/131398123/1223577.pdfIn PDF document text
    • http://jukebud.redeemernewton.com/uploads/1/3/2/6/132683008/paginowevugalap.pdfIn PDF document text
    • https://site-1036733.mozfiles.com/files/1036733/29046768743.pdfIn PDF document text
    • https://site-1039328.mozfiles.com/files/1039328/84472834011.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/1/0483/3876/3927/files/human_resource_management_books_for_bba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2442/2811/files/21294190651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/sine_ratio_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3714/7804/files/funny_mario_pics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1497/4371/files/46469362567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/524af4dc-01af-43cd-89af-0c39fcef031a/10366678829.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcc698b8-d7ea-42ca-a4e9-f82b95bd4eed/vusugujipuronixudo.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D26 5616 bytes
SHA-256: a09f3c5bb2bdc7c90541c506d756b244c684417a458b7cc0edc324be759f9780
font_01_sfnt_off0000906f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x906F 10316 bytes
SHA-256: 67115c7749ddf50cef4c1965c4807b77a600049140b72d6de5c2e83bc98c728c

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