Malicious PDF — malware analysis report

Static analysis result for SHA-256 28aba9b4599de2ec…

MALICIOUS

PDF

60.7 KB Created: 2020-10-26 08:52:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: ba972964c3224522575e6fb7ec55f0cc SHA-1: 54d8a34fc243f328227ba7aa6019307236b64688 SHA-256: 28aba9b4599de2ec94e958759a10d0eab0478da73044a4ca7cdb4abdc313ffbd
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.me/123?keyword=iptvvictor+tv+online+hd+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378152/normal_5f8e1c9991d38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370076/normal_5f90167391282.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f94ef7621f24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384310/normal_5f9477efd084c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382423/normal_5f8f6c79dafaa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/kevebanebonabuxulugide.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/modul_belajar_bahasa_korea_dasar.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/dujomofubenag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8904/1837/files/maths_tricks_for_class_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/9030/5958/files/guia_de_entrevista_ejemplo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5564/8420/files/gigewixaxag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9609/5397/files/78309999747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f113400-25ed-49be-9624-cb7439294755/itech_rapmls_com.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e1e6f89-a32c-4fde-963b-a984be6492c9/gosorigekapatu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec7ed248-5528-4a38-918a-bb0dc1d7711f/88766134892.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90af91e0-d305-4563-bd86-4e4236232381/93431435879.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1754266d-21c9-412f-920d-fd8cb207ddcd/vuzonovatufogad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5274/6920/files/wasexewisoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9020/6101/files/iron_jawed_angels_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2284/3556/files/the_roles_of_the_president_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9236/8796/files/great_writing_1_4th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8361/9232/files/vuwogomudeb.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a40d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA40D 2960 bytes
SHA-256: 3c6502e04658d985b37ed967139d4b1bb7136c1c8ff06868e6b64c17630b7d50
font_01_sfnt_off0000ae90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE90 5044 bytes
SHA-256: 26765921ee05f8ecdf9987da532217f98e8aecda6d71e752e49008ac4048e008
font_02_sfnt_off0000bfab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFAB 10864 bytes
SHA-256: cb43f0988fdbf4d5bde2cd44569f0459e64d79afb7f47efff6d5f7163b32b632