Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d9c22d7f1ade403…

MALICIOUS

PDF

45.3 KB Created: 2020-10-06 23:32:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3a22fe034d50e75f7bd67af2f5c81a79 SHA-1: acf5f7c1894b2ae12826f265e5ee0e5a2ddf9777 SHA-256: 5d9c22d7f1ade403673e857441246362ec8f55624c2d834a945d6338912c6e2f
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/strik?keyword=baahubali+tamil+full+movie+1080p+dow In PDF document text
    • http://vefaxuj.jadziacypressrandomllama.com/uploads/1/3/1/4/131454035/losopakaruzokir_bazukexupop_jelutasuja.pdfIn PDF document text
    • http://files.genuinecollection.ca/uploads/1/3/1/4/131438044/toxudapamezoz.pdfIn PDF document text
    • http://files.mrjoelmbarr.com/uploads/1/3/1/4/131453402/e63decfc.pdfIn PDF document text
    • http://files.nestampede.com/uploads/1/3/1/4/131406563/fogetod.pdfIn PDF document text
    • http://files.westportpaddleclub.com/uploads/1/3/0/8/130814717/5926129.pdfIn PDF document text
    • https://site-1048569.mozfiles.com/files/1048569/mesulozefomo.pdfIn PDF document text
    • https://site-1039671.mozfiles.com/files/1039671/maxebuf.pdfIn PDF document text
    • https://site-1037240.mozfiles.com/files/1037240/tetujiniluwoponiwerejaz.pdfIn PDF document text
    • https://site-1037122.mozfiles.com/files/1037122/jetelakugaz.pdfIn PDF document text
    • https://site-1038884.mozfiles.com/files/1038884/98250055890.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/1/0500/9122/9349/files/21133750477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0020/7272/files/18444678869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7183/4785/files/23962692107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2823/3883/files/tolokamotekup.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_off00006eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEA 5736 bytes
SHA-256: 7cfa2bdcdda759dad36d88891cf6c8b368ed26602329a96cbd5bb74f63cf6023
font_01_sfnt_off00008261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8261 11252 bytes
SHA-256: 8a8f0be7084a3c1f3bd65d5a80428b3991698a932c71e389f94109c852e6ba6e