Malicious PDF — malware analysis report

Static analysis result for SHA-256 be2e45ae12338a70…

MALICIOUS

PDF

52.6 KB Created: 2020-10-31 12:32:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: e883ec3422095cd5f5c6f15cdeefd290 SHA-1: 5e0344e186dc0be05960038703152fb2ff90147b SHA-256: be2e45ae12338a70fe1a2a91f51bfad235a2c1330640dc05973719e96edf2a67
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/pify?keyword=new+smyrna+beach+shark+attack+capital+of+the+world In PDF document text
    • https://cdn-cms.f-static.net/uploads/4394062/normal_5f8f1c8d46441.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5f9a425bc7bf5.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/1/0497/4300/3807/files/personal_service_corporation_vs_s_corp.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/5020481379.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/074f1ce4-f15a-48bb-929f-c9a9632010bc/94530789179.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b953feb-efb5-4688-bd7e-3a3ea2c0162d/55370768865.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/73308732368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9359/7604/files/50753598304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5090/0889/files/graphs_of_polynomial_functions.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/gebazogajor.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/suzufisufa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d32c01b-b7f0-49e2-a7be-23131d9eb70f/59461395389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0728/5147/files/67349720410.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/47937991423.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/wadoxopokuj.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_off000089bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89BC 5764 bytes
SHA-256: b5ed116823801d038ed38a95dcd4b14715ef402827d97888b849782233dd3454
font_01_sfnt_off00009d47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D47 11720 bytes
SHA-256: 9b1f700d155f74afba045ff847f52b8b8d3adc3deb72381f80acee57df4b2759

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