Malicious PDF — malware analysis report

Static analysis result for SHA-256 966e2d710ecd680b…

MALICIOUS

PDF

51.9 KB Created: 2020-10-25 04:51:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 5ac1c926d2201d862257a989dcfb48b2 SHA-1: 23eedc269d061a4fa83765655883bf33f27709f0 SHA-256: 966e2d710ecd680b88bdbb97796ff90144b393a5124794f6f184baed3ea3da99
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://ttraff.link/pify?keyword=fundamental+of+physics+shankar+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368985/normal_5f92dd94a5940.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f93aad0a1161.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370560/normal_5f905fbde3498.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f8bbe34971dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368976/normal_5f8f191359734.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369493/normal_5f8b403f9c160.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384159/normal_5f93bc34e4370.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379973/normal_5f939cc01eb3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382790/normal_5f91b99253740.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375194/normal_5f927045d6c58.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/1/0433/7870/4536/files/coronado_high_school_henderson_nv_boundaries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4256/9368/files/fluke_789_process_meter_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/169cb683-8f40-4aa5-863e-52d32fc4f981/25841230000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f8467a8-9d87-4b2a-aec3-569eacf4f891/bogag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20585fd5-816e-4ef7-909b-3f4723af8b07/40972079881.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da15d8d9-ba93-4fb0-8c58-89935f8762c1/42189462293.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f151d094-c869-41a5-b848-71106ae82746/talifixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c068fced-e910-4a7c-a8d8-3ef9b362028a/89417789186.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e954e73-d98a-47ed-9f70-e42136238b45/12711251980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a03c4e08-38f8-4685-8500-0fd9ca6fe63c/7705208851.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d0fbb22-ca49-4aab-9b9a-6973bc36b376/rixiretodetagekevew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4565/1110/files/i_am_content_in_french.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9507/2674/files/venedipamotu.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_off00008b62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B62 5516 bytes
SHA-256: f5ea1b696bd0c176dcc404508363014b01ef52397b9921c62165efcd2074039b
font_01_sfnt_off00009e0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E0B 10500 bytes
SHA-256: 16e0a5519fa0a231b9529abd858dbb4e75dda043e0e647eb2b12cda7bf2972ea

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