Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fbe551afff5ad07…

MALICIOUS

PDF

32.9 KB Created: 2020-10-07 07:45:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 424bf41ebcd938c68ff5ee7a9fc8291d SHA-1: a3153ee2904b86938fdd26dce8902d46bcfcddc1 SHA-256: 7fbe551afff5ad076c17b4694e086b07c17ef7c7e4c60dc43d5cdc36d6205180
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=poodle+rescue+texas+dallas In PDF document text
    • https://site-1040602.mozfiles.com/files/1040602/fabibemijat.pdfIn PDF document text
    • https://site-1036633.mozfiles.com/files/1036633/tolowafexofexobalofivijen.pdfIn PDF document text
    • https://site-1037029.mozfiles.com/files/1037029/migugajun.pdfIn PDF document text
    • https://site-1037870.mozfiles.com/files/1037870/filufowudewi.pdfIn PDF document text
    • https://site-1039958.mozfiles.com/files/1039958/gowoxigavobez.pdfIn PDF document text
    • https://site-1038924.mozfiles.com/files/1038924/pojigepadenitefulujo.pdfIn PDF document text
    • https://site-1036731.mozfiles.com/files/1036731/81410111221.pdfIn PDF document text
    • https://site-1040171.mozfiles.com/files/1040171/15597426807.pdfIn PDF document text
    • https://site-1042677.mozfiles.com/files/1042677/dunarufukaguzofegugoxera.pdfIn PDF document text
    • https://site-1044184.mozfiles.com/files/1044184/81938920987.pdfIn PDF document text
    • http://pomiwaki.tischtalentguild.com/uploads/1/3/1/1/131164567/divexilurijogunu.pdfIn PDF document text
    • http://bozujape.jdfitness360.com/uploads/1/3/1/6/131637308/ca9750c5cd.pdfIn PDF document text
    • http://files.moulinsdecharlie.com/uploads/1/3/2/6/132682868/sadorifedir-xupebevutur.pdfIn PDF document text
    • http://jedunimu.northbridgehistoricalsociety.com/uploads/1/3/1/4/131453046/zamax.pdfIn PDF document text
    • http://gesuvelur.chickenskauai.com/uploads/1/3/1/4/131453526/1b5edbdc5c.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/1/0430/0334/7098/files/33414606483.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_off00004570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4570 5000 bytes
SHA-256: a14e94e638f06edc505e170d779dd4d84fb49ccc2f08aa999ce1c88a8cc921d3
font_01_sfnt_off00005683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5683 9580 bytes
SHA-256: fe8b0d301b6af8ed419793f2b4d13b0fa03b0801580f66924b0b801786b9a765