Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3730f44afb63932…

MALICIOUS

PDF

42.5 KB Created: 2020-10-10 09:11:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6876414847258b516e54c2f0246740c5 SHA-1: bd8d9899690e8c73be8608fbe724574509fd48a4 SHA-256: d3730f44afb63932cd97b90fbafb408735135ed5d6e46c722ca174cb9c77352e
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://ggtraff.ru/strik?keyword=formato+balance+de+comprobacion+sunat+excel In PDF document text
    • http://mexisa.fureverpetrescue.com/uploads/1/3/1/0/131071145/buwovolujam.pdfIn PDF document text
    • http://jatoselet.cantstopforeveryimpala.com/uploads/1/3/0/7/130739416/bovedufudanasi-ratexabe-lovaxedifomune.pdfIn PDF document text
    • http://womawido.shikareddy.com/uploads/1/3/1/4/131406515/4198403.pdfIn PDF document text
    • http://files.newlife.ca/uploads/1/3/1/8/131856476/3548003.pdfIn PDF document text
    • http://files.daniellewisarchitect.com/uploads/1/3/0/7/130739935/74b48f56d41.pdfIn PDF document text
    • https://site-1043216.mozfiles.com/files/1043216/vujowafurogod.pdfIn PDF document text
    • https://site-1042731.mozfiles.com/files/1042731/teribibi.pdfIn PDF document text
    • https://site-1036932.mozfiles.com/files/1036932/wirajilafajetudufamo.pdfIn PDF document text
    • https://site-1040313.mozfiles.com/files/1040313/xovolasuzekasa.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/1/0480/9526/4932/files/renewable_energy_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3000/1302/files/life_size_doll_of_myself.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/marvel_future_fight_hack_no_survey_no_password.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1765/2382/files/99985558631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2534572-d626-4f0b-9895-bb25c1a43572/75945436781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3311590f-287c-440f-8106-46fa787889cb/xumodu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51b260e1-6489-4f79-bb33-5c25fdb974b7/94488486260.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/497ab50b-cae6-4476-a275-0245ffa9b44f/monamudavegorif.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_off000062d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D3 5384 bytes
SHA-256: c7fa0340a70c948fdf53fb375669f461ce6af21d087fad99bb31476a972df889
font_01_sfnt_off00007500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7500 11928 bytes
SHA-256: 832ff0a020e4ae6b79721177f0091200cd2197f06f5a739528e95cb7c561316a

Open this report in the interactive analyzer, or submit your own file for analysis.