Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2111ffa6dd79ccd…

MALICIOUS

PDF

44.4 KB Created: 2020-10-25 10:25:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 3c4d5de22c9c1e7ebe5d9638183121de SHA-1: 730bfa945ea956f5ded829173f345ae1a49de286 SHA-256: d2111ffa6dd79ccdb8cd7977fe1609e8fcfabb041884b0f341dd6f0694972d57
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.club/aws?keyword=affiliate+marketing+riches+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387932/normal_5f90e17a22adf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375353/normal_5f8e8f09dd503.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379032/normal_5f8c9530d4bca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379718/normal_5f93d4ceec6d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373248/normal_5f894b1b24def.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403952/normal_5f9357d5ec838.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410965/normal_5f94285aeb40c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369922/normal_5f8e6f34e5426.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcf9550c-b46e-4350-9718-0ed08e8260d5/6566491615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f552fc6-a1b4-49f6-ab74-c776245f2264/69886090129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ce14849-4f90-4ece-a149-4d1c9730fede/4804010584.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7942b61-f727-4a8f-90a4-594b631182c1/10059186894.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/rumininixusule.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/22765276475.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/bidawozosenuxujasigol.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/leonard_gershe_butterflies_are_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/gomitajulifaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7980/6375/files/20091975016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1564/3031/files/95728830876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0700/2784/files/kefitumesejosovud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0490/4383/3009/files/3575821254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0743/2631/files/kadupewejudorikadulotel.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_off00006ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB1 5624 bytes
SHA-256: 51e5ab881a77663ed404fce1bb71cc9e05e9799250f3f951fdc229af4988b9e1
font_01_sfnt_off00007db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB1 11440 bytes
SHA-256: be3ef7b36025038ef7daed637efd2183f7e08746babba90a61850df7933abba4